J.S. Bach: Prelude and Fugue in A flat (WTK, Book I, No.17), BWV 862

歌曲	J.S. Bach: Prelude and Fugue in A flat (WTK, Book I, No.17), BWV 862
歌手	András Schiff
专辑	Aria mit 30 Veränderungen, BWV 988 "Goldberg Variations"