Johann Sebastian Bach (1685–1750) was a German composer and musician of the late Baroque period, widely regarded as one of the greatest composers in Western music history. Renowned for his extraordinary output, Bach wrote works in almost every musical form of his time. His most celebrated pieces include the Brandenburg Concertos, the cello suites, the sonatas and partitas for solo violin, the Goldberg Variations, The Well-Tempered Clavier, and major choral works such as the St Matthew Passion and the Mass in B minor. Born into a family of musicians in Eisenach, Bach was orphaned at a young age and raised by his elder brother. He developed his craft working for churches and courts in Arnstadt, Mühlhausen, Weimar, and Köthen, eventually becoming the cantor of St Thomas’s in Leipzig, where he spent the rest of his life composing and teaching. Bach’s music is known for its mastery of counterpoint, innovative use of harmony, and its blending of German, Italian, and French influences. Though highly respected as an organist during his lifetime, Bach’s reputation as a composer grew significantly after the 19th-century Bach Revival. Today, his works are central to the classical repertoire and are admired for their complexity, expressive depth, and technical brilliance. His legacy also continued through four of his sons, who became influential composers.