1-4.Piano sonata in B flat major, D. 960 Piano sonata in B flat major, D. 960 1-4. Sonata in B flat major, D. 960 Piano sonata in B flat major, D960 Piano Sonata in B flat major, D960 Piano Sonata in B flat major, K. 570 Piano sonata in B-flat major, K. 281 Piano sonata in B flat major, K.333 Violin sonata in E flat major, K. 380 1-4. Sonata in E flat major, D568