Sonata in B flat, K.570 Sonata in B flat,K 570 Sonata in B flat,KV 570 Sonata in B flat, K.281 Sonata in B flat, K.333 Sonata in B flat,K.10 Sonata in B flat,K.378 Sonata in E flat, K.282 Sonata in B flat, KV 378 Sonata in E flat, KV 380