Acis and Galatea (HWV 49) is a musical work by George Frideric Handel with an English text by John Gay. The work has been variously described as a serenata, a masque, a pastoral or pastoral opera, a "little opera" (in a letter by the composer while it was being written), an entertainment and by the New Grove Dictionary of Music as an oratorio. The work was originally devised as a one-act masque which premiered in 1718. Handel later adapted the piece into a three-act serenata for the Italian opera troupe in London in 1732, which incorporated a number of songs (still in Italian) from Aci, Galatea e Polifemo, his 1708 setting of the same story to different music. He later adapted the original English work into a two-act work in 1739. Acis and Galatea was the pinnacle of pastoral opera in England. Indeed, several writers, such as musicologist Stanley Sadie, consider it the greatest pastoral opera ever composed. As is typical of the genre, Acis and Galatea was written as a courtly entertainment about the simplicity of rural life and contains significant quantities of wit and self-parody. The secondary characters, Polyphemus and Damon, provide humour without diminishing the pathos of the tragedy of the primary characters, Acis and Galatea. The music of the first act is both elegant and sensual, while the final act takes on a more melancholy and plaintive tone. The opera was significantly influenced by the pastoral operas presented at the Theatre Royal, Drury Lane during the early 18th century. Reinhard Keiser and Henry Purcell also served as influences, but overall the conception and execution of the work is wholly individual to Handel. Acis and Galatea was by far Handel's most popular dramatic work and is his only stage work never to have left the opera repertory. The opera has been adapted numerous times since its premiere, with a notable arrangement being made by Wolfgang Amadeus Mozart in 1788. Handel never gave the work in the form in which it is generally heard today, since it contains music which, while by Handel, was never added by him.

Admeto, re di Tessaglia ("Admetus, King of Thessaly", HWV 22) is a three-act opera written for the Royal Academy of Music with music composed by George Frideric Handel to an Italian-language libretto prepared by Nicola Francesco Haym. The story is partly based on Euripides' Alcestis. The opera's first performance was at the Haymarket Theatre in London on 31 January 1727. The original cast included Faustina Bordoni as Alcestis and Francesca Cuzzoni as Antigona, as Admeto was the second of the five operas that Handel composed to feature specifically these two prime donne of the day. The opera was very successful at its first performances. However the presence of two prima donnas in the London operas had created factions of very partisan supporters of either one or the other ladies, and some performances were disrupted by hisses and loud cat calls by supporters of one of the star sopranos whenever the other one was singing, creating public scandal.

The Twelve Grand Concertos, Op. 6, HWV 319–330, by George Frideric Handel are concerti grossi for a concertino violin duet and a ripieno four-part string orchestra with harpsichord continuo. First published by subscription in London by John Walsh in 1739, they became Handel's Opus 6 in a second edition two years later. Taking the older concerto da chiesa and concerto da camera of Arcangelo Corelli as models, rather than the later three-movement Venetian concerto of Antonio Vivaldi favoured by Johann Sebastian Bach, the concerti were written to be played during performances of Handel's oratorios and odes. Despite the conventional model, Handel incorporated in the movements the full range of his compositional styles, including trio sonatas, operatic arias, French overtures, Italian sinfonias, airs, fugues, themes and variations and a variety of dances. The concerti were largely composed of new material; they are amongst the finest examples in the genre of baroque concerti grossi. The Musette, or rather chaconne, in this Concerto, was always in favour with the composer himself, as well as the public; for I well remember that HANDEL frequently introduced it between the parts of his Oratorios, both before and after publication. Indeed no instrumental composition that I have ever heard during the long favour of this, seemed to me more grateful and pleasing, particularly, in subject.

Alcina (HWV 34) is a 1735 opera by George Frideric Handel. Handel used the libretto of L'isola di Alcina, a work set to music in 1728 in Rome by Riccardo Broschi, which he had acquired a year later during his travels in Italy. Partly altered for better conformity, the story was originally taken from Ludovico Ariosto's epic poem Orlando furioso (like those of the Handel operas Orlando and Ariodante). The opera contains several musical sequences with opportunity for dance: these were composed for dancer Marie Sallé.

The Concerti grossi, Op. 3, HWV 312–317, are six concerti grossi by George Frideric Handel compiled into a set and published by John Walsh in 1734. Musicologists now agree that Handel had no initial knowledge of the publishing. Instead, Walsh, seeking to take advantage of the commercial success of Corelli's Concerti grossi, Op. 6, simply combined several of Handel's already existing works and grouped them into six "concertos".

George Frideric Handel (23 February 1685 – 14 April 1759) composed works including 42 operas; 24 oratorios; more than 120 cantatas, trios and duets; numerous arias; odes and serenatas; solo and trio sonatas; 18 concerti grossi; and 12 organ concertos. Collected editions of Handel's works include the Händel-Gesellschaft (HG) and the Hallische Händel-Ausgabe (HHA), but the more recent Händel-Werke-Verzeichnis (HWV) publication is now commonly used to number his works. For example, Handel's Messiah can be referred to as: HG xlv, HHA i/17, or HWV 56. Some of Handel's music is also numbered based on initial publications, for example a 1741 publication by Walsh labelled twelve of Handel's concerti grossi as Opus 6.

Almira, Königin von Castilien ("Almira, Queen of Castile", HWV 1; full title: Der in Krohnen erlangte Glücks-Wechsel, oder: Almira, Königin von Castilien) is Handel's first opera, composed when he was 19 years old. It was first performed in Hamburg in January 1705.

Amadigi di Gaula (HWV 11) is a "magic" opera in three acts, with music by George Frideric Handel. It was the fifth Italian opera that Handel wrote for an English theatre and the second he wrote for Richard Boyle, 3rd Earl of Burlington in 1715. The opera about a damsel in distress is based on Amadis de Grèce, a French tragédie-lyrique by André Cardinal Destouches and Antoine Houdar de la Motte. Amadigi was written for a small cast, employing four high voices. Handel made prominent use of wind instruments, so the score is unusually colorful, comparable to his Water Music. The opera received its first performance in London at the King's Theatre in the Haymarket on 25 May 1715, in a lavish successful production. Charles Burney maintained near the end of the eighteenth century: Amadigi contained "...more invention, variety and good composition, than in any one of the musical dramas of Handel which I have yet carefully and critically examined".

The Twelve Grand Concertos, Op. 6, HWV 319–330, by George Frideric Handel are concerti grossi for a concertino violin duet and a ripieno four-part string orchestra with harpsichord continuo. First published by subscription in London by John Walsh in 1739, they became Handel's Opus 6 in a second edition two years later. Taking the older concerto da chiesa and concerto da camera of Arcangelo Corelli as models, rather than the later three-movement Venetian concerto of Antonio Vivaldi favoured by Johann Sebastian Bach, the concerti were written to be played during performances of Handel's oratorios and odes. Despite the conventional model, Handel incorporated in the movements the full range of his compositional styles, including trio sonatas, operatic arias, French overtures, Italian sinfonias, airs, fugues, themes and variations and a variety of dances. The concerti were largely composed of new material; they are amongst the finest examples in the genre of baroque concerti grossi. The Musette, or rather chaconne, in this Concerto, was always in favour with the composer himself, as well as the public; for I well remember that HANDEL frequently introduced it between the parts of his Oratorios, both before and after publication. Indeed no instrumental composition that I have ever heard during the long favour of this, seemed to me more grateful and pleasing, particularly, in subject.

Ariodante (HWV 33) is an opera seria in three acts by George Frideric Handel. The anonymous Italian libretto was based on a work by Antonio Salvi, which in turn was adapted from Canti 4, 5 and 6 of Ludovico Ariosto's Orlando Furioso. Each act contains opportunities for dance, originally composed for dancer Marie Sallé and her company. The opera was first performed in the Covent Garden Theatre, London, on 8 January 1735. Ariodante opened Handel's first season at Covent Garden and successfully competed against the rival Opera of the Nobility, supported by the Prince of Wales. Handel had the tacit and financial support of the King and Queen and, more vocally, of the Princess Royal. The opera received 11 performances during its premiere season at Covent Garden. Like Handel's other works in the opera seria genre, Ariodante, despite its initial success, fell into oblivion for nearly two hundred years. An edition of the score was published in the early 1960s, from the Hallische Händel-Ausgabe. In the 1970s, the work began to be revived, and has come to be considered one of Handel's finest operas. On 29 March 1971, the Handel Society of New York performed the American premiere of the work in a concert version with mezzo-soprano Sophia Steffan in the title role and Judith Raskin as Ginevra. Charles Cudworth has discussed the influence of French dance music in the opera. Winton Dean has noted that Act 2 of the opera, in its original version, is the only act in a Handel opera which ends with accompanied recitative.

The Twelve Grand Concertos, Op. 6, HWV 319–330, by George Frideric Handel are concerti grossi for a concertino violin duet and a ripieno four-part string orchestra with harpsichord continuo. First published by subscription in London by John Walsh in 1739, they became Handel's Opus 6 in a second edition two years later. Taking the older concerto da chiesa and concerto da camera of Arcangelo Corelli as models, rather than the later three-movement Venetian concerto of Antonio Vivaldi favoured by Johann Sebastian Bach, the concerti were written to be played during performances of Handel's oratorios and odes. Despite the conventional model, Handel incorporated in the movements the full range of his compositional styles, including trio sonatas, operatic arias, French overtures, Italian sinfonias, airs, fugues, themes and variations and a variety of dances. The concerti were largely composed of new material; they are amongst the finest examples in the genre of baroque concerti grossi. The Musette, or rather chaconne, in this Concerto, was always in favour with the composer himself, as well as the public; for I well remember that HANDEL frequently introduced it between the parts of his Oratorios, both before and after publication. Indeed no instrumental composition that I have ever heard during the long favour of this, seemed to me more grateful and pleasing, particularly, in subject.

Messiah (HWV 56) is an English-language oratorio composed in 1741 by George Frideric Handel. The text was compiled from the King James Bible and the Coverdale Psalter by Charles Jennens. It was first performed in Dublin on 13 April 1742 and received its London premiere a year later. After an initially modest public reception, the oratorio gained in popularity, eventually becoming one of the best-known and most frequently performed choral works in Western music. Handel's reputation in England, where he had lived since 1712, had been established through his compositions of Italian opera. He turned to English oratorio in the 1730s in response to changes in public taste; Messiah was his sixth work in this genre. Although its structure resembles that of opera, it is not in dramatic form; there are no impersonations of characters and no direct speech. Instead, Jennens's text is an extended reflection on Jesus as the Messiah called Christ. The text begins in Part I with prophecies by Isaiah and others, and moves to the annunciation to the shepherds, the only "scene" taken from the Gospels. In Part II, Handel concentrates on the Passion of Jesus and ends with the Hallelujah chorus. In Part III, he covers Paul's teachings on the resurrection of the dead and Christ's glorification in heaven. Handel wrote Messiah for modest vocal and instrumental forces, with optional alternative settings for many of the individual numbers. In the years after his death, the work was adapted for performance on a much larger scale, with giant orchestras and choirs numbering up to 800 performers. Efforts to update its orchestration began with Mozart's Der Messias. In the late 20th and early 21st centuries, the trend has been towards reproducing a greater fidelity to Handel's original intentions, although "big Messiah" productions continue to be mounted. A near-complete version was issued on 78 rpm discs in 1928; since then the work has been recorded many times. The autograph manuscript of the oratorio is preserved in the British Library.

Berenice (HWV 38) is an opera in three acts by George Frideric Handel to a 1709 Antonio Salvi libretto, Berenice, regina d'Egitto, or Berenice, Queen of Egypt. Handel began the music in December 1736; the premiere took place at Covent Garden Theatre in London on 18 May 1737 — but was unsuccessful, with just three further performances. Set circa 81 B.C., Berenice traces the life of Berenice III of Egypt, daughter of Ptolemy IX, the main character in another Handel opera, Tolomeo.

George Frideric (or Frederick) Handel ( HAN-dəl; baptised Georg Fried[e]rich Händel, German: [ˈɡeːɔʁk ˈfʁiːdʁɪç ˈhɛndl̩] ; 5 March [O.S. 23 February] 1685 – 14 April 1759) was a German-British Baroque composer well-known for his operas, oratorios, anthems, concerti grossi, and organ concerti. Born in Halle, Handel spent his early life in Hamburg and Italy before settling in London in 1712, where he spent the bulk of his career and became a naturalised British subject in 1727. He was strongly influenced both by the middle-German polyphonic choral tradition and by composers of the Italian Baroque. In turn, Handel's music forms one of the peaks of the "high baroque" style, bringing Italian opera to its highest development, creating the genres of English oratorio and organ concerto, and introducing a new style into English church music. He is consistently recognised as one of the greatest composers of his age. Handel started three commercial opera companies to supply the English nobility with Italian opera. In 1737 he had a physical breakdown, changed direction creatively, addressed the middle class and made a transition to English choral works. After his success with Messiah (1742), he never composed an Italian opera again. His orchestral Water Music and Music for the Royal Fireworks remain steadfastly popular. One of his four coronation anthems, Zadok the Priest, has been performed at every British coronation since 1727. He died a respected and rich man in 1759, aged 74, and was given a state funeral at Westminster Abbey. Interest in Handel's music has grown since the mid-20th century. The musicologist Winton Dean wrote that "Handel was not only a great composer; he was a dramatic genius of the first order." His music was admired by Classical-era composers, especially Haydn, Mozart and Beethoven.

Ezio ("Aetius", HWV 29) is an opera seria by George Frideric Handel to a libretto by Metastasio. Metastasio's libretto was partly inspired by Jean Racine's play Britannicus. The same libretto had already been set by many other composers, first of all Nicola Porpora who managed to preempt the official Rome premiere of Pietro Auletta's setting for 26 December 1728 with his own version (of a slightly edited copy of the libretto) for Venice on 20 November, a month earlier. The libretto continued to be set and reset for another 50 years, including two versions of Ezio by Gluck. Handel's Ezio is considered one of the purest examples of opera seria with its absence of vocal ensembles. The story of the opera is a fictionalisation of events in the life of the fifth-century AD Roman general Flavius Aetius (Ezio in Italian), returned from his victory over Attila.

The Twelve Grand Concertos, Op. 6, HWV 319–330, by George Frideric Handel are concerti grossi for a concertino violin duet and a ripieno four-part string orchestra with harpsichord continuo. First published by subscription in London by John Walsh in 1739, they became Handel's Opus 6 in a second edition two years later. Taking the older concerto da chiesa and concerto da camera of Arcangelo Corelli as models, rather than the later three-movement Venetian concerto of Antonio Vivaldi favoured by Johann Sebastian Bach, the concerti were written to be played during performances of Handel's oratorios and odes. Despite the conventional model, Handel incorporated in the movements the full range of his compositional styles, including trio sonatas, operatic arias, French overtures, Italian sinfonias, airs, fugues, themes and variations and a variety of dances. The concerti were largely composed of new material; they are amongst the finest examples in the genre of baroque concerti grossi. The Musette, or rather chaconne, in this Concerto, was always in favour with the composer himself, as well as the public; for I well remember that HANDEL frequently introduced it between the parts of his Oratorios, both before and after publication. Indeed no instrumental composition that I have ever heard during the long favour of this, seemed to me more grateful and pleasing, particularly, in subject.

Flavio, re de' Longobardi ("Flavio, King of the Lombards", HWV 16) is an opera seria in three acts by George Frideric Handel. The Italian-language libretto was by Nicola Francesco Haym, after Matteo Noris's Flavio Cuniberto. It was Handel's fourth full-length opera for the Royal Academy of Music. Handel had originally entitled the opera after the character of Emilia in the opera. Flavio is unusually concise for an opera by Handel of this period. It is also notable as a skillful blend of tragedy and comedy, both in the text and the music, and for being one of Handel's few operas to feature leading roles for all major voice categories of his day – soprano, contralto, castrato, tenor and bass. The Act III Scene VII duet, "Deh, perdona, o dolce bene", sung by Guido and Emilia is a well known excerpt from the opera.

The Twelve Grand Concertos, Op. 6, HWV 319–330, by George Frideric Handel are concerti grossi for a concertino violin duet and a ripieno four-part string orchestra with harpsichord continuo. First published by subscription in London by John Walsh in 1739, they became Handel's Opus 6 in a second edition two years later. Taking the older concerto da chiesa and concerto da camera of Arcangelo Corelli as models, rather than the later three-movement Venetian concerto of Antonio Vivaldi favoured by Johann Sebastian Bach, the concerti were written to be played during performances of Handel's oratorios and odes. Despite the conventional model, Handel incorporated in the movements the full range of his compositional styles, including trio sonatas, operatic arias, French overtures, Italian sinfonias, airs, fugues, themes and variations and a variety of dances. The concerti were largely composed of new material; they are amongst the finest examples in the genre of baroque concerti grossi. The Musette, or rather chaconne, in this Concerto, was always in favour with the composer himself, as well as the public; for I well remember that HANDEL frequently introduced it between the parts of his Oratorios, both before and after publication. Indeed no instrumental composition that I have ever heard during the long favour of this, seemed to me more grateful and pleasing, particularly, in subject.

Giove in Argo (Jupiter in Argos, HWV A14) is an Italian opera by George Frideric Handel. It is one of Handel's three pasticcio works made up of music and arias from his previous operas. The libretto was written by Antonio Maria Lucchini. The opera was first performed at the King's Theatre, Haymarket, London, on 1 May 1739.

Giulio Cesare in Egitto (Italian: [ˈdʒuːljo ˈtʃeːzare in eˈdʒitto, - ˈtʃɛː-]; lit. 'Julius Caesar in Egypt'; HWV 17), commonly known as Giulio Cesare, is a dramma per musica (opera seria) in three acts composed by George Frideric Handel for the Royal Academy of Music in 1724. The libretto was written by Nicola Francesco Haym who used an earlier libretto by Giacomo Francesco Bussani, which had been set to music by Antonio Sartorio (1676). The opera was a success at its first performances, was frequently revived by Handel in his subsequent opera seasons and is now one of the most often performed Baroque operas. The opera's plot is loosely based on historical events during the Roman Civil War of 49–45 BC.

Giustino ("Justin", HWV 37) is an opera seria in three acts by George Frideric Handel. The opera was first given at the Covent Garden Theatre in London on 16 February 1737. The Italian-language libretto was adapted from Charles VI's court poet Pietro Pariati's libretto for Giustino (1711), after the much older original libretto of Nicolò Beregan (1682). The libretto had already been adapted by many composers including Vivaldi's Giustino of 1724 and Tomaso Albinoni's lost opera of 1711.

George Frideric Handel (23 February 1685 – 14 April 1759) composed works including 42 operas; 24 oratorios; more than 120 cantatas, trios and duets; numerous arias; odes and serenatas; solo and trio sonatas; 18 concerti grossi; and 12 organ concertos. Collected editions of Handel's works include the Händel-Gesellschaft (HG) and the Hallische Händel-Ausgabe (HHA), but the more recent Händel-Werke-Verzeichnis (HWV) publication is now commonly used to number his works. For example, Handel's Messiah can be referred to as: HG xlv, HHA i/17, or HWV 56. Some of Handel's music is also numbered based on initial publications, for example a 1741 publication by Walsh labelled twelve of Handel's concerti grossi as Opus 6.

Imeneo (alternative title: Hymen, HWV 41) is an opera seria in three acts by George Frideric Handel. The Italian-language libretto was adapted from Silvio Stampiglia's Imeneo. Handel had begun composition in September 1738, but did not complete the score until 1740.

Lotario ("Lothair", HWV 26) is an opera seria in three acts by George Frideric Handel. The Italian-language libretto was adapted from Antonio Salvi's Adelaide.The opera was first given at the King's Theatre in London on 2 December 1729. The story of the opera is a fictionalisation of some events in the life of Holy Roman Empress Adelaide of Italy.

Muzio Scevola (Italian pronunciation: [ˈmuttsjo ʃˈʃɛːvola]; HWV 13) is an opera seria in three acts about Gaius Mucius Scaevola. The Italian-language libretto was by Paolo Antonio Rolli, adapted from a text by Silvio Stampiglia. The music for the first act was composed by Filippo Amadei (sometimes given as Mattei), the second act by Giovanni Bononcini, and the third by George Frideric Handel. Collaborations of groups of composers were common in the 18th century, though this is the only one done in London. Bononcini had written the music for two earlier treatments of this story on his own, works dating from 1695 and 1710.

Messiah (HWV 56) is an English-language oratorio composed in 1741 by George Frideric Handel. The text was compiled from the King James Bible and the Coverdale Psalter by Charles Jennens. It was first performed in Dublin on 13 April 1742 and received its London premiere a year later. After an initially modest public reception, the oratorio gained in popularity, eventually becoming one of the best-known and most frequently performed choral works in Western music. Handel's reputation in England, where he had lived since 1712, had been established through his compositions of Italian opera. He turned to English oratorio in the 1730s in response to changes in public taste; Messiah was his sixth work in this genre. Although its structure resembles that of opera, it is not in dramatic form; there are no impersonations of characters and no direct speech. Instead, Jennens's text is an extended reflection on Jesus as the Messiah called Christ. The text begins in Part I with prophecies by Isaiah and others, and moves to the annunciation to the shepherds, the only "scene" taken from the Gospels. In Part II, Handel concentrates on the Passion of Jesus and ends with the Hallelujah chorus. In Part III, he covers Paul's teachings on the resurrection of the dead and Christ's glorification in heaven. Handel wrote Messiah for modest vocal and instrumental forces, with optional alternative settings for many of the individual numbers. In the years after his death, the work was adapted for performance on a much larger scale, with giant orchestras and choirs numbering up to 800 performers. Efforts to update its orchestration began with Mozart's Der Messias. In the late 20th and early 21st centuries, the trend has been towards reproducing a greater fidelity to Handel's original intentions, although "big Messiah" productions continue to be mounted. A near-complete version was issued on 78 rpm discs in 1928; since then the work has been recorded many times. The autograph manuscript of the oratorio is preserved in the British Library.

Ottone, re di Germania ("Otto, King of Germany", HWV 15) is an opera by George Frideric Handel, to an Italian–language libretto adapted by Nicola Francesco Haym from the libretto by Stefano Benedetto Pallavicino for Antonio Lotti's opera Teofane. It was the first new opera written for the Royal Academy of Music (1719)'s fourth season and had its first performance on 12 January 1723 at the King's Theatre, Haymarket in London. Handel had assembled a cast of operatic superstars for this season and the opera became an enormous success. The story of the opera is a fictionalisation of some events in the lives of Adalbert of Italy, his mother Willa of Tuscany (called "Gismonda" in the opera), Otto II, and the Byzantine Princess Theophanu, who became the wife of Otto II in a state marriage intended to form an alliance between the Byzantine Empire and the Holy Roman Empire.

Partenope (Parthenope), HWV 27, is an opera by George Frideric Handel, first performed at the King's Theatre in London on 24 February 1730. Although following the structure and forms of opera seria, the work is humorous in character and light-textured in music, with a plot involving romantic complications and gender confusion. A success with audiences at the time of its original production and then unperformed for many years, Partenope is now often seen on the world's opera stages.

Radamisto (HWV 12) is an opera seria in three acts by George Frideric Handel to an Italian libretto by Nicola Francesco Haym, based on L'amor tirannico, o Zenobia by Domenico Lalli and Zenobia by Matteo Noris. It was Handel's first opera for the Royal Academy of Music. The opera's plot is loosely based on the account of Rhadamistus in Tacitus's Annals of Imperial Rome.

Riccardo primo, re d'Inghilterra ("Richard the First, King of England", HWV 23) is an opera seria in three acts written by George Frideric Handel for the Royal Academy of Music (1719) . The Italian-language libretto was by Paolo Antonio Rolli, after Francesco Briani's Isacio tiranno, set by Antonio Lotti in 1710. Handel wrote the work for the Royal Academy's 1726–27 opera season, and also as homage to the newly crowned George II and the nation where Handel had just received citizenship. Riccardo Primo was the third opera Handel composed for the trio of famous star Italian singers, the castrato Senesino and the sopranos Francesca Cuzzoni and Faustina Bordoni.

The Twelve Grand Concertos, Op. 6, HWV 319–330, by George Frideric Handel are concerti grossi for a concertino violin duet and a ripieno four-part string orchestra with harpsichord continuo. First published by subscription in London by John Walsh in 1739, they became Handel's Opus 6 in a second edition two years later. Taking the older concerto da chiesa and concerto da camera of Arcangelo Corelli as models, rather than the later three-movement Venetian concerto of Antonio Vivaldi favoured by Johann Sebastian Bach, the concerti were written to be played during performances of Handel's oratorios and odes. Despite the conventional model, Handel incorporated in the movements the full range of his compositional styles, including trio sonatas, operatic arias, French overtures, Italian sinfonias, airs, fugues, themes and variations and a variety of dances. The concerti were largely composed of new material; they are amongst the finest examples in the genre of baroque concerti grossi. The Musette, or rather chaconne, in this Concerto, was always in favour with the composer himself, as well as the public; for I well remember that HANDEL frequently introduced it between the parts of his Oratorios, both before and after publication. Indeed no instrumental composition that I have ever heard during the long favour of this, seemed to me more grateful and pleasing, particularly, in subject.

Rodelinda, regina de' Longobardi (HWV 19) is an opera seria in three acts composed for the first Royal Academy of Music by George Frideric Handel. The libretto is by Nicola Francesco Haym, based on an earlier libretto by Antonio Salvi. Rodelinda has long been regarded as one of Handel's greatest works.

The Twelve Grand Concertos, Op. 6, HWV 319–330, by George Frideric Handel are concerti grossi for a concertino violin duet and a ripieno four-part string orchestra with harpsichord continuo. First published by subscription in London by John Walsh in 1739, they became Handel's Opus 6 in a second edition two years later. Taking the older concerto da chiesa and concerto da camera of Arcangelo Corelli as models, rather than the later three-movement Venetian concerto of Antonio Vivaldi favoured by Johann Sebastian Bach, the concerti were written to be played during performances of Handel's oratorios and odes. Despite the conventional model, Handel incorporated in the movements the full range of his compositional styles, including trio sonatas, operatic arias, French overtures, Italian sinfonias, airs, fugues, themes and variations and a variety of dances. The concerti were largely composed of new material; they are amongst the finest examples in the genre of baroque concerti grossi. The Musette, or rather chaconne, in this Concerto, was always in favour with the composer himself, as well as the public; for I well remember that HANDEL frequently introduced it between the parts of his Oratorios, both before and after publication. Indeed no instrumental composition that I have ever heard during the long favour of this, seemed to me more grateful and pleasing, particularly, in subject.

Messiah (HWV 56) is an English-language oratorio composed in 1741 by George Frideric Handel. The text was compiled from the King James Bible and the Coverdale Psalter by Charles Jennens. It was first performed in Dublin on 13 April 1742 and received its London premiere a year later. After an initially modest public reception, the oratorio gained in popularity, eventually becoming one of the best-known and most frequently performed choral works in Western music. Handel's reputation in England, where he had lived since 1712, had been established through his compositions of Italian opera. He turned to English oratorio in the 1730s in response to changes in public taste; Messiah was his sixth work in this genre. Although its structure resembles that of opera, it is not in dramatic form; there are no impersonations of characters and no direct speech. Instead, Jennens's text is an extended reflection on Jesus as the Messiah called Christ. The text begins in Part I with prophecies by Isaiah and others, and moves to the annunciation to the shepherds, the only "scene" taken from the Gospels. In Part II, Handel concentrates on the Passion of Jesus and ends with the Hallelujah chorus. In Part III, he covers Paul's teachings on the resurrection of the dead and Christ's glorification in heaven. Handel wrote Messiah for modest vocal and instrumental forces, with optional alternative settings for many of the individual numbers. In the years after his death, the work was adapted for performance on a much larger scale, with giant orchestras and choirs numbering up to 800 performers. Efforts to update its orchestration began with Mozart's Der Messias. In the late 20th and early 21st centuries, the trend has been towards reproducing a greater fidelity to Handel's original intentions, although "big Messiah" productions continue to be mounted. A near-complete version was issued on 78 rpm discs in 1928; since then the work has been recorded many times. The autograph manuscript of the oratorio is preserved in the British Library.

Siroe, re di Persia (Siroes, King of Persia, HWV 24), is an opera seria in three acts by George Frideric Handel. It was his 12th opera for the Royal Academy of Music and was written for the sopranos Francesca Cuzzoni and Faustina Bordoni. The opera uses an Italian-language libretto by Nicola Francesco Haym, after Metastasio's Siroe. Like many of Metastasio's libretti, it was also set by Handel's contemporaries, e.g. by Leonardo Vinci, Antonio Vivaldi and Johann Adolph Hasse (see Hasse's Siroe). Pasquale Errichelli's setting of the libretto (see Errichelli's Siroe) premiered in the year of Handel's death. The story of the opera is a fictionalisation of some events in the life of Kavad II (also known as Shērōē), King of the Sasanian Empire in 628 AD.

Tamerlano (Tamerlane, HWV 18) is an opera seria in three acts by George Frideric Handel. The Italian libretto was by Nicola Francesco Haym, adapted from Agostino Piovene's Tamerlano together with another libretto entitled Bajazet after Nicolas Pradon's Tamerlan, ou La Mort de Bajazet. The opera was staged by the Royal Academy of Music in the King's Theatre at the Haymarket, London.

Teseo ("Theseus", HWV 9; Italian pronunciation: [teˈzɛo]) is an opera seria with music by George Frideric Handel, the only Handel opera that is in five acts. The Italian-language libretto was by Nicola Francesco Haym, after Philippe Quinault's Thésée. It was Handel's third London opera, intended to follow the success of Rinaldo after the unpopular Il pastor fido. First performed on 10 January 1713,Teseo featured "magical" effects such as flying dragons, transformation scenes and apparitions and had a cast of notable Italian opera singers. It was a success with London audiences, receiving thirteen performances even though the stage machinery for the "magical" effects broke down, and would have received more performances had not one of the theatre's managers run away with the box office receipts.

Tolomeo, re d'Egitto ("Ptolemy, King of Egypt", HWV 25) is an opera seria in three acts by George Frideric Handel to an Italian text by Nicola Francesco Haym, adapted from Carlo Sigismondo Capece's Tolomeo et Alessandro. It was Handel's 13th (or 14th if the one act Handel contributed to the collaborative opera Muzio Scevola is counted) and last opera for the Royal Academy of Music (1719) and was also the last of the operas he composed for the triumvirate of internationally renowned singers, the castrato Senesino and the sopranos Francesca Cuzzoni and Faustina Bordoni. The story of the opera is a fictionalisation of some events in the life of Ptolemy IX Lathyros, king of Egypt. An aria from the opera, Non lo dirò col labbro, was adapted by Arthur Somervell (1863–1937) as the popular English-language classic "Silent Worship" in 1928.

Serse (Italian pronunciation: [ˈsɛrse]; English title: Xerxes; HWV 40) is an opera seria in three acts by George Frideric Handel. It was first performed in London on 15 April 1738. The Italian libretto was adapted by an unknown hand from that by Silvio Stampiglia (1664–1725) for an earlier opera of the same name by Giovanni Bononcini in 1694. Stampiglia's libretto was itself based on one by Nicolò Minato (ca.1627–1698) that was set by Francesco Cavalli in 1654. The opera is set in Persia (modern-day Iran) about 470 BC and is very loosely based upon Xerxes I of Persia. Serse, originally sung by a mezzo-soprano castrato, is now usually performed by a female mezzo-soprano or countertenor. The opening aria, "Ombra mai fu", sung by Xerxes to a plane tree (Platanus orientalis), is set to one of Handel's best-known melodies, and is often known as Handel's "Largo" (despite being marked "larghetto" in the score).