9-11.Piano sonata in A major, D. 664 (op. post. 120) Piano Sonata in A major D 959(op. post.) Piano Sonata in C minor D 958(op. post.) Piano Sonata in B flat major D 960(op. post.) Piano sonata in C major, K. 330 (300h) 12.Piano sonata in A major, D664 Piano sonata in C major, K.330 (300h) Piano sonata in D major, op.53 D 850 Piano sonata in a major,d.959 (钢琴奏鸣曲,d959,a大调)