Prelude & Fugue No.1 in C Major,BWV 846 Prelude & Fugue No.11 in F major,BWV 856 Prelude & Fugue No.15 in G major,BWV 860 Prelude & Fugue No.19 in A major,BWV 864 Prelude & Fugue No.9 in E major,BWV 854 Prelude & Fugue No.23 in B major,BWV 868 Prelude & Fugue no.2 in C minor, BWV847 Prlude & Fugue no.9 in E major, BWV878 Prelude & Fugue no.6 in D minor, BWV875 Prelude & Fugue No.21 in B-flat major,BWV 866