Sonata in E flat major, D568 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 Sonata in B flat major, D. 960 1-4. Sonata in E flat major, D568 Sonata in A flat major,Op.26 Sonata in E flat major,Op.7 Sonata in B flat major, KV 333