Piano Trio No.6 In B Flat Major,Op.97 'Archduke' Trio Piano Trio No.6 in B-flat major,Op.97 'Archduke' Piano trio No. 7 in B flat major, op. 97 "Archduke" Piano trio in B flat major, op. 97 "archduke" Piano Trio No.6 in B flat,Op.97 "Archduke" Piano trio No. 7 in B flat major - "Archduke" Piano trio No. 7 in B flat op. 97 "archduke" Piano Trio No.7 in B flat,Op.97 'Archduke' Piano trio No. 6 in E flat major, op. 70 no. 2 Piano trio no. 6 in B flat, op. 97, "Archduke"