A cello concerto (sometimes called a violoncello concerto) is a concerto for solo cello with orchestra or, very occasionally, smaller groups of instruments. These pieces have been written since the Baroque era if not earlier. However, unlike instruments such as the violin, the cello had to face harsh competition from the older, well-established viola da gamba. As a result, few important cello concertos were written before the 19th century – with the notable exceptions of those by Vivaldi, C.P.E. Bach, Haydn and Boccherini. Its full recognition as a solo instrument came during the Romantic era with the concertos of Schumann, Saint-Saëns, Lalo and Dvořák. From then on, cello concertos have become more and more frequent. Twentieth-century composers have made the cello a standard concerto instrument, along with the already-rooted piano and violin concertos; among the most notable concertos of the first half of the century are those of Elgar, Prokofiev, Barber and Hindemith. Many post-World War II composers (Shostakovich, Walton, Ligeti, Britten, Dutilleux, Lutoslawski and Penderecki among others) have written at least one. One special consideration composers must take with the cello (as well as all instruments with a low range) is with the issue of projection. Unlike instruments like the violin, whose high range projects fairly easily above the orchestra, the cello's lower notes can be easily lost when the cello is not playing a solo or near solo. Because of this, composers have had to deliberately pare down the orchestral component of cello concertos while the cello is playing in the lower registers.

The Concerto Fantasy for Two Timpanists and Orchestra is a double timpani concerto written by Philip Glass in 2000. It is paired with the Cello Concerto on Volume I of Glass' Concerto Project, a set of eight concerti by the composer. A typical performance of the work lasts 25–28 minutes. It was written for Jonathan Haas and later recorded by Evelyn Glennie, and was premiered by Haas and Svet Stoyanov with the American Symphony Orchestra in Avery Fisher Hall, Lincoln Center, conducted by Leon Botstein. The work was commissioned jointly by the American Symphony Orchestra, the Peabody Symphony, the Milwaukee Symphony Orchestra, the St. Louis Symphony Orchestra and the Phoenix Symphony. In 2004, a transcription for wind ensemble was written by Mark Lortz, which debuted at Peabody Institute in 2005.

The saxophone (often referred to colloquially as the sax) is a type of single-reed woodwind instrument with a conical body, usually made of brass. As with all single-reed instruments, sound is produced when a reed on a mouthpiece vibrates to produce a sound wave inside the instrument's body. The pitch is controlled by opening and closing holes in the body to change the effective length of the tube. The holes are closed by leather pads attached to keys operated by the player. Saxophones are made in various sizes and are almost always treated as transposing instruments. A person who plays the saxophone is called a saxophonist or saxist. The saxophone is used in a wide range of musical styles including classical music (such as concert bands, chamber music, solo repertoire, and occasionally orchestras), military bands, marching bands, jazz (such as big bands and jazz combos), and contemporary music. The saxophone is also used as a solo and melody instrument or as a member of a horn section in some styles of rock and roll and popular music. The saxophone was invented by the Belgian instrument maker Adolphe Sax in the early 1840s and was patented on 28 June 1846. Sax invented two groups of seven instruments each—one group contained instruments in C and F, and the other group contained instruments in B♭ and E♭. The B♭ and E♭ instruments soon became dominant, and most saxophones encountered today are from this series. Instruments from the series pitched in C and F never gained a foothold and constituted only a small fraction of instruments made by Sax. High-pitch (also marked "H" or "HP") saxophones tuned sharper than the (concert) A = 440 Hz standard were produced into the early twentieth century for sonic qualities suited for outdoor use, but are not playable to modern tuning and are considered obsolete. Low-pitch (also marked "L" or "LP") saxophones are equivalent in tuning to modern instruments. C soprano and C melody saxophones were produced for the casual market as parlor instruments during the early twentieth century, and saxophones in F were introduced during the late 1920s but never gained acceptance. The modern saxophone family consists entirely of B♭ and E♭ instruments. The saxophones in widest use are the B♭ soprano, E♭ alto, B♭ tenor, and E♭ baritone. The E♭ sopranino and B♭ bass saxophone are typically used in larger saxophone choir settings, when available. In the table below, consecutive members of each family are pitched an octave apart.

The concerto grosso (pronounced [konˈtʃɛrto ˈɡrɔsso]; Italian for big concert(o), plural concerti grossi [konˈtʃɛrti ˈɡrɔssi]) is a form of baroque music in which the musical material is passed between a small group of soloists (the concertino) and full orchestra (the ripieno, tutti or concerto grosso). This is in contrast to the solo concerto which features a single solo instrument with the melody line, accompanied by the orchestra.

The violoncello ( VY-ə-lən-CHEL-oh, Italian pronunciation: [vjolonˈtʃɛllo]), commonly abbreviated as cello ( CHEL-oh), is a medium-low pitched bowed string instrument of the violin family. Its four strings are usually tuned in perfect fifths: from low to high, C2, G2, D3 and A3. The viola's four strings are each an octave higher. Music for the cello is generally written in the bass clef; the tenor clef and treble clef are used for higher-range passages. Played by a cellist or violoncellist, the instrument enjoys a large solo repertoire with and without accompaniment, as well as numerous concerti. As a solo instrument, the cello uses its whole range, from bass to soprano, and in chamber music, such as string quartets and the orchestra's string section, it often plays the bass part, where it may be reinforced an octave lower by the double basses. Figured bass music of the Baroque era typically assumes a cello, viola da gamba or bassoon as part of the basso continuo group alongside chordal instruments such as organ, harpsichord, lute, or theorbo. Cellos are found in many other ensembles, from modern Chinese orchestras (as a replacement of Gehu 革胡）to cello rock bands.

The Concerto for Two Violins in D minor, BWV 1043, also known as the Double Violin Concerto, is a violin concerto of the Late Baroque era, which Johann Sebastian Bach composed around 1730. It is one of the composer's most successful works.

The Concerto for Harpsichord and Orchestra was completed by Philip Glass in spring of 2002. It was commissioned for the Northwest Chamber Orchestra by Charles and Diana Carey and published by Dunvagen Music. Glass wrote the concerto with the Baroque tradition in mind; however, in order to approach the work in a modern idiom, he calls for a contemporary chamber orchestra to accompany the harpsichord. The concerto was premiered in September 2002 in Seattle, with David Schrader as soloist performing with the Northwest Chamber Orchestra. It is approximately 20 minutes in length. The concerto was included in Glass' Concerto Project, a collection in four volumes.

Philip Morris Glass (born January 31, 1937) is an American composer and pianist. He is widely regarded as one of the most influential composers of the late 20th century. Glass' work has been associated with minimalism, being built up from repetitive phrases and shifting layers. He described himself as a composer of "music with repetitive structures", which he has helped to evolve stylistically. Glass founded the Philip Glass Ensemble in 1968. He has written 15 operas, numerous chamber operas and musical theatre works, 15 symphonies, 12 concertos, nine string quartets, various other chamber music pieces, and many film scores. He has received nominations for four Grammy Awards, including two for Best Contemporary Classical Composition for Satyagraha (1987) and String Quartet No. 2 (1988). He has received three Academy Award for Best Original Score nominations for Martin Scorsese's Kundun (1997), Stephen Daldry's The Hours (2002), and Richard Eyre's Notes on a Scandal (2006). He also composed the scores for Koyaanisqatsi (1982), Mishima: A Life in Four Chapters (1985), Hamburger Hill (1987), The Thin Blue Line (1988), Candyman (1992), The Truman Show (1998), and The Illusionist (2006). Glass is known for composing the operas Einstein on the Beach (1976), Satyagraha (1980), Akhnaten (1983), The Voyage (1992), and The Perfect American (2013). He also wrote the scores for Broadway productions such as the revivals of The Elephant Man (2002), The Crucible (2016), and King Lear (2019). For the latter he won the Drama Desk Award for Outstanding Music in a Play. Glass has received many accolades, including a BAFTA Award, a Drama Desk Award, and a Golden Globe Award, as well as nominations for three Academy Awards, four Grammy Awards, and a Primetime Emmy Award. He has also received the Ordre des Arts et des Lettres in 1995, the National Medal of Arts in 2010, the Kennedy Center Honors in 2018, and the Grammy Trustees Award in 2020. In 2025, he received a Lifetime Achievement from the World Soundtrack Academy.

Symphony No. 4 ("Heroes") is a symphony composed by American composer Philip Glass in 1996 based on the album "Heroes" by David Bowie. Glass had based his earlier Symphony No. 1 on the David Bowie album Low.

Philip Glass' Symphony No. 2 was commissioned by Brooklyn Academy of Music. It was first performed on October 15, 1994, by the Brooklyn Philharmonic Orchestra, conducted by Dennis Russell Davies.

Philip Glass's Symphony No. 3 is a work for string orchestra, commissioned for the Stuttgart Chamber Orchestra. The premiere, conducted by Dennis Russell Davies, took place in Künzelsau, (Germany), on February 5, 1995.

Symphony No. 4 ("Heroes") is a symphony composed by American composer Philip Glass in 1996 based on the album "Heroes" by David Bowie. Glass had based his earlier Symphony No. 1 on the David Bowie album Low.

"Plutonian Ode" is a poem written by American Beat poet Allen Ginsberg in 1978 against the arms race and nuclear armament of the superpowers. It is heavily inspired by Gnosticism which Ginsberg came to know after reading Hans Jonas's book on the subject. Philip Glass' Symphony No. 6 is based on and includes parts of this poem. It was first published in The CoEvolution Quarterly / Journal for the Protection of All Beings co-issue, Fall 1978.

Symphony No. 7 (also known as A Toltec Symphony) is a 2005 symphony by Philip Glass. The National Symphony Orchestra commissioned Glass to write it to commemorate the 60th birthday of conductor Leonard Slatkin. Slatkin conducted the debut concert on January 20, 2005 at the Kennedy Center, which Glass attended.

Symphony No. 8 is a 2005 symphony by Philip Glass commissioned by the Bruckner Orchestra Linz. It was premiered on November 2, 2005 at Brooklyn Academy of Music by the Bruckner Orchestra Linz conducted by Dennis Russell Davies. The symphony is in three movements and features extended solo writing. Critic Allan Kozinn described the symphony's chromaticism as more extreme, more fluid, and its themes and textures as continually changing, morphing without repetition, and praised the symphony's "unpredictable orchestration", pointing out the "beautiful flute and harp variation in the melancholy second movement". Alex Ross remarked that "against all odds, this work succeeds in adding something certifiably new to the overstuffed annals of the classical symphony. (...) The musical material is cut from familiar fabric, but it’s striking that the composer forgoes the expected bustling conclusion and instead delves into a mood of deepening twilight and unending night." Orchestration: 2 flutes (dbl. picc.), 2 cor anglais, 2 clarinets (E-flat & bass), 2 bassoons, 4 horns, 3 trumpets (2 in E-flat), 3 trombones (2+1 bass), tuba, timp, 4 percussion (harp + piano), strings.

The Light is a 1987 composition by Philip Glass, his first score for a full symphony orchestra. The work was commissioned for the Michelson-Morley Centennial Celebration held at Case Western Reserve University. The musical structure is inspired by the 1887 Michelson–Morley experiment, an investigation of the speed of light that marked a turning point in modern science. An excerpt of The Light plays in the 2022 documentary Moonage Daydream.

The Tirol Concerto for Piano and Orchestra (also known as the Piano Concerto No. 1) is a piano concerto by Philip Glass. The composer wrote the work in 2000. On commission by the Klangspuren in Schwaz, it was written for the Stuttgarter Kammerorchester. It is one of eight concerti in Glass' series The Concerto Project, an amalgamation of works in four volumes.

Philip Glass's Violin Concerto No. 1 was commissioned by the American Composers Orchestra for soloist Paul Zukofsky and premiered in New York City on 5 April 1987. The work was composed with Glass's late father in mind. The piece quickly became one of Glass's most popular works. It is usually around 25–30 minutes in duration when performed.

Philip Glass' Violin Concerto No. 2, titled The American Four Seasons, received its world premiere in Toronto on December 9, 2009, with violinist Robert McDuffie (for whom the work was composed) and co-commissioner the Toronto Symphony Orchestra under conductor Peter Oundjian. Its European premiere was in London on April 17, 2010, with McDuffie and co-commissioner the London Philharmonic Orchestra under conductor Marin Alsop. Its total duration is around 38 minutes.