Sonatas in C major, K. 279 Sonata in C major K. 279 Sonatas in B major, K. 281 Sonatas in B major, K. 570 Sonatas in C major, K. 309 Sonatas in D major, K. 284 Sonatas in D major, K. 576 Sonatas in E major, K. 282 Sonatas in G major, K. 283 Sonata in C major, D279