Bach- minuet in G major. J S Bach was a German composer and keyboard player. During his lifetime Bach was chiefly known for his masterful organ and harpsichord playing; his great genius as a composer was only really discovered in the 19th century. Bach wrote organ music, including choral preludes, preludes, fugues, and toccatas; orchestral and chamber works, including the Brandenburg Concertos; and church music, including the St Matthew Passion. Noteworthy among the collections of his keyboard works The Well-Tempered Clavier and The Goldberg Variations.