The German composer Johann Sebastian Bach (1685-1750) was a man of prodigious output and the father of a musical dynasty. He married twice and fathered numerous children three of whom Wilhelm Friedemann, Carl Philipp Emanuel and Johann Christian also became composers.
Born in Eisenach he became at age 15 a chorister at Lüneburg then church organist at Arnstadt (1703-1707) and Mühlhausen (1707-1708). Subsequently he became court organist at Weimar (1708-1717) then musical director for Prince Leopold of Köthen (1717-1728). Finally he became the musical director for the city of Leipzig where he remained until his death.
He was a composer of prodigious talent and output his works include 200 cantatas and oratorios. He also produced the six Brandenburg Concertos and the collection of 48 preludes and fugues known as The Well-tempered Clavier, the Goldberg Variations, the Italian Concerto, and the French and English Suite. One of his later works was The Art of Fugue.