5-8. Sonata in B flat major, D960 Piano sonata in B flat major, D960 1-4. Sonata in B flat major, D. 960 Piano Sonata in B flat major, D960 1-4. Sonata in E flat major, D568 Piano sonata in B flat major, D. 960 1-3. Sonata in A flat major, D557 Sonata in B flat major, D960 Sonata in B flat major, D 960 Sonata in B flat major,D.960