Bach, Johann Sebastian

1. An eighteenth-century German composer, organist, and choirmaster, commonly considered the greatest composer of the baroque era. His output was enormous and includes cantatas , concertos , oratorios , organ pieces, sonatas for solo instruments, and suites for both solo instruments and orchestra ; all of it is marked by elaborate counterpoint . Some of Bach's best-known works are the six Brandenburg Concertos ; the Toccata and Fugue in D-minor for organ; and an arrangement of a hymn, “Jesu, Joy of Man's Desiring,” for chorus and orchestra.