Sonata in C Major for Piano with Four Hands, K. 19d; Sonata in D Major for Piano with Four Hands, K. 381 (123a); Sonata in Bb Major for Piano with Four Hands, K 358 (186c); Sonata in F Major for Piano with Four Hands, K 497; Andante with Five Variations in G Major for Piano with Four Hands, K. 501; Sonata in C Major for Piano with Four Hands, K. 521and Sonata in G Major for Piano with Four Hands (incomplete), K. 357 (497a).