Prelude And Fugue in E-Flat Major, BWV 552 - J.S. Bach: Prelude And Fugue in E-Flat Major, BWV 552: Prelude (ゼンソウキョクトフーガ: １．　ゼンソウキョク|前奏曲とフーガ変ホ長調 BWV552: 1. Prelude)