Achille Claude Debussy (French pronunciation: [aʃil klod dəbysi]; 22 August 1862 – 25 March 1918) was a French composer. He is sometimes seen as the first Impressionist composer, although he vigorously rejected the term. He was among the most influential composers of the late 19th and early 20th centuries. Born to a family of modest means and little cultural involvement, Debussy showed enough musical talent to be admitted at the age of ten to France's leading music college, the Conservatoire de Paris. He originally studied the piano, but found his vocation in innovative composition, despite the disapproval of the Conservatoire's conservative professors. He took many years to develop his mature style, and was nearly 40 when he achieved international fame in 1902 with the only opera he completed, Pelléas et Mélisande. Debussy's orchestral works include Prélude à l'après-midi d'un faune (1894), Nocturnes (1897–1899) and Images (1905–1912). His music was to a considerable extent a reaction against Wagner and the German musical tradition. He regarded the classical symphony as obsolete and sought an alternative in his "symphonic sketches", La mer (1903–1905). His piano works include sets of 24 Préludes and 12 Études. Throughout his career he wrote mélodies based on a wide variety of poetry, including his own. He was greatly influenced by the Symbolist poetic movement of the later 19th century. A small number of works, including the early La Damoiselle élue and the late Le Martyre de saint Sébastien have important parts for chorus. In his final years, he focused on chamber music, completing three of six planned sonatas for different combinations of instruments. With early influences including Russian and Far Eastern music and works by Chopin, Debussy developed his own style of harmony and orchestral colouring, derided – and unsuccessfully resisted – by much of the musical establishment of the day. His works have strongly influenced a wide range of composers including Béla Bartók, Igor Stravinsky, George Gershwin, Olivier Messiaen, George Benjamin, and the jazz pianist and composer Bill Evans. Debussy died from cancer at his home in Paris at the age of 55 after a composing career of a little more than 30 years.

Achille Claude Debussy (French pronunciation: [aʃil klod dəbysi]; 22 August 1862 – 25 March 1918) was a French composer. He is sometimes seen as the first Impressionist composer, although he vigorously rejected the term. He was among the most influential composers of the late 19th and early 20th centuries. Born to a family of modest means and little cultural involvement, Debussy showed enough musical talent to be admitted at the age of ten to France's leading music college, the Conservatoire de Paris. He originally studied the piano, but found his vocation in innovative composition, despite the disapproval of the Conservatoire's conservative professors. He took many years to develop his mature style, and was nearly 40 when he achieved international fame in 1902 with the only opera he completed, Pelléas et Mélisande. Debussy's orchestral works include Prélude à l'après-midi d'un faune (1894), Nocturnes (1897–1899) and Images (1905–1912). His music was to a considerable extent a reaction against Wagner and the German musical tradition. He regarded the classical symphony as obsolete and sought an alternative in his "symphonic sketches", La mer (1903–1905). His piano works include sets of 24 Préludes and 12 Études. Throughout his career he wrote mélodies based on a wide variety of poetry, including his own. He was greatly influenced by the Symbolist poetic movement of the later 19th century. A small number of works, including the early La Damoiselle élue and the late Le Martyre de saint Sébastien have important parts for chorus. In his final years, he focused on chamber music, completing three of six planned sonatas for different combinations of instruments. With early influences including Russian and Far Eastern music and works by Chopin, Debussy developed his own style of harmony and orchestral colouring, derided – and unsuccessfully resisted – by much of the musical establishment of the day. His works have strongly influenced a wide range of composers including Béla Bartók, Igor Stravinsky, George Gershwin, Olivier Messiaen, George Benjamin, and the jazz pianist and composer Bill Evans. Debussy died from cancer at his home in Paris at the age of 55 after a composing career of a little more than 30 years.

La boîte à joujoux (The Toy-Box) is a ballet score by Claude Debussy. The composer completed the work as a piano score, but he died before he was able to orchestrate it. A successful orchestration was done by André Caplet. In 1913, Debussy was approached by the artist and writer André Hellé, who had devised a ballet scenario from his children’s tale La boîte à joujoux. A children's theme appealed to Debussy, who was devoted to his own young daughter, Emma-Claude (known as "Chouchou"), and had already written his suite Children's Corner for her. He originally envisaged a puppet show, but he changed his mind about this. Debussy composed the piano score, but the outbreak of the First World War caused the ballet to be postponed, and it was not staged until 1919, after the composer's death. The work, which plays for about half an hour, is in seven sections: Prelude: Le sommeil de la boite (The toy-box asleep) Tableau 1: Le magasin de jouets (The toy shop) Valse: Danse de la poupée (The doll's waltz) Tableau 2: Le champ de bataille (The field of battle) Tableau 3: La bergerie a vendre (The sheepfold for sale) Tableau 4: Apres fortune faite (After making a fortune) Epilogue Of the toys in Hellé's box there are three principals, to each of whom Debussy gives a little leitmotiv: a toy soldier, a pretty doll, and a foolish and quarrelsome polichinelle. The soldier falls in love with the doll, but the polichinelle will not give her up. There is a fierce battle, and the soldier is wounded by the polichinelle, who then renounces the doll. She nurses the soldier, falls in love with him, and they marry and live happily ever after.

This is a list of compositions by Claude Debussy categorized by genre, and sorted within each genre by "L²" number, according to the 2001 revised catalogue by musicologist François Lesure, which is generally in chronological order of composition date. (For convenience, the "L¹" numbers from Lesure's original 1977 catalogue are also shown below. They were widely used on recordings, and so on, for twenty years.) (The "L¹" and "L²" headers can be clicked on to sort the entire list by either numbering. A second click will reverse the order. Reloading the webpage will restore the genre-category order.)