| 1 |  | Sonata for piano, 4 hands in C major (K. 19d) |  | - | 
  | 2 |  | Movement for piano, 4 hands in G major (fragment), K. 357 (K. 497a) |  | - | 
  | 3 |  | Sonata for 2 pianos in D major, K. 448 (K. 375a) |  | - | 
  | 4 |  | Sonata for piano, 4 hands in D major, K. 381 (K. 123a) |  | - | 
  | 5 |  | Sonata for piano, 4 hands in B flat major, K. 358 (K. 186c) |  | - | 
  | 6 |  | Sonata for piano, 4 hands in F major, K. 497 |  | - | 
  | 7 |  | Sonata for piano, 4 hands in C major, K. 521 |  | - | 
  | 8 |  | Adagio and Allegro for mechanical organ in F minor, K. 594 |  | - | 
  | 9 |  | Variations (5) on an original theme for piano, 4 hands in G major, K. 501 |  | - | 
  | 10 |  | Work(s) |  | - | 
  | 11 |  | Fugue for 2 pianos in C minor, K. 426 |  | - |