Sonata in C minor,K 457 Sonata in C minor,KV 457 Sonata in C minor K. 457 Sonata in C minor, K.457 Sonata in C minor, K457 Sonatas in C minor, K. 457 Sonata in A minor, D537 Sonata in A minor, D845 Sonata in C minor,Op.45 Sonata in C minor, D. 958