Prelude & Fugue No.7 in E-flat Major,BWV 852 Prelude & Fugue No.17 in A-flat major,BWV 862 Prelude & Fugue No.21 in B-flat major,BWV 866 Prelude & Fugue No.22 in B-flat minor,BWV 867 Prelude & Fugue No.13 in F-sharp major,BWV 858 Prelude & Fugue No.9 in E major,BWV 854 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.23 in B major,BWV 868