Prelude & Fugue no.4 in C sharp minor, BWV849 Prelude & Fugue No.4 in C-sharp Minor,BWV 849 Prelude & Fugue No.14 in F-sharp minor,BWV 859 Prelude & Fugue No.18 in G-sharp minor,BWV 863 Prelude & Fugue no.2 in C minor, BWV847 Prelude & Fugue no.20 in A minor, BWV889 Prelude & Fugue no.6 in D minor, BWV875 Prelude and fugue in C sharp minor Prelude No.10 in C sharp minor, Op.34 Prelude and fugue in a minor bwv 894