Four original Sonatas with the Variations in G K.501 (probably on the composer's own theme and also original duet) the Fugue in G minor K.401 (completed by M. Stadler) and two Fantasias originally for mechanical organ arranged for piano duet. CONTENTSFantasia in F minor K594; Fantasia in F minor K608; Fugue in G minor K401; Sonata in B flat K358; Sonata in C K521; Sonata in D K381; Sonata in F K497; Variations in G K501