Piano Trio in E flat major,D929 Piano Trio in B flat major,D898 Piano trio n B flat major, op. 97 Piano Trio No.1 in B flat major,op.21 Piano Trio No.1 in B flat major,op.21; Piano trio No. 9 in E flat major, Woo 38 Piano trio No. 9 in E flat major, op. 121a Piano trio K502 in B flat major Piano trio in B flat 'Archduke' Piano trio in C major