Piano sonata No. 12 in A-flat, op. 26 Piano sonata No. 11 in B-flat, op. 22 Piano sonata No. 12 in A flat op. 26 Piano sonata no. 12 in A-flat major, op. 26 Piano sonata No. 4 in E-flat, op. 7 Piano sonata No. 31 in A-flat, op. 110 Piano sonata no. 12 in Ab major op. 26 Piano sonata no. 7 in B flat, op.83 Piano sonata no. 8 in B flat, op.84 Piano sonata No. 12 in A-flat major op. 26