No.1 in B flat major, BWV 825 No. 21 in B flat major, BWV 866 No. 21 in B flat major, BWV 890 No. 11 in F flat major, BWV 880 No.2 in E flat major, op.9 no.2 No.1 in b flat minor,op.9 no.1 Sonata No.1 in E flat major BWV 525 Partita No.1 in B-flat major, BWV 825 No.1 in E flat major Partita No.1 in B flat major,BWV 825