Baroque music (UK: or US: ) refers to the period or dominant style of Western classical music composed from about 1600 to 1750. The Baroque style followed the Renaissance period, and was followed in turn by the Classical period after a short transition (the galant style). Baroque music forms a major portion of the "classical music" canon, and continues to be widely studied, performed, and listened to. Key composers of the Baroque era include Jacopo Peri, who wrote the first operas; Alessandro Stradella, who originated the concerto grosso style; and Arcangelo Corelli, who was one of the first composers to publish widely and have his music performed across Europe. The Baroque period saw the formalization of common-practice tonality, an approach to writing music in which a song or piece is written in a particular key; this type of harmony has continued to be used extensively in Western classical and popular music. Baroque composers experimented with finding a fuller sound for each instrumental part, leading to the creation of the modern orchestra; modernised musical notation, including developing figured bass; and developed new instrumental playing techniques. Baroque music expanded the size, range, and complexity of instrumental performance, and also established the mixed vocal/instrumental forms of opera, cantata and oratorio and the instrumental forms of the solo concerto and sonata as musical genres. Dense, complex polyphonic music, in which multiple independent melody lines were performed simultaneously. During the Baroque era professional musicians were expected to be accomplished improvisers of both solo melodic lines and accompaniment parts. Baroque concerts were typically accompanied by a basso continuo group, in which bass instruments such as viol, cello, or double bass played the bassline. A characteristic Baroque form was the dance suite.

Jean-Baptiste Lully (born Giovanni Battista Lulli; 28 or 29 November [O.S. 18 or 19 November] 1632 – 22 March 1687) was an Italian-French composer, dancer and instrumentalist, who is considered a master of the French Baroque music style. Best known for his operas, he spent most of his life working in the court of Louis XIV and became a French subject in 1661. He was a close friend of the playwright Molière, with whom he collaborated on numerous comédie-ballets, including L'Amour médecin, George Dandin ou le Mari confondu, Monsieur de Pourceaugnac, Psyché and his best known work, Le Bourgeois gentilhomme.

Keyboard works (Klavierwerke) by Johann Sebastian Bach traditionally refers to Chapter 8 in the BWV catalogue or the fifth series of the New Bach Edition, both of which list compositions for a solo keyboard instrument like the harpsichord or the clavichord. Despite the fact that the organ is also a keyboard instrument, and that in Bach's time the distinction wasn't always made whether a keyboard composition was for organ or another keyboard instrument, Wolfgang Schmieder ranged organ compositions in a separate section of the Bach-Werke-Verzeichnis (Nos. 525-771). Also other compositions for keyboard, like compositions for lute-harpsichord and fortepiano were listed outside the "Klavierwerke" range by Schmieder. Lute works are in the range 995–1000, Chapter 9 in the BWV catalogue.