Prelude and Fugue in A minor, BWV 543 by Johann Sebastian Bach


'''Prelude and Fugue in A minor''', BWV 543 (an alternate version is numbered BWV 543a) is a piece of organ music written by Johann Sebastian Bach sometime around his years as court organist to the Duke of Saxe-Weimar (1708-1717). It is the final incarnation of Bach's harpsichord Fugue in A minor, BWV 944, written in 1708.