Par MOZART WOLFGANG AMADEUS. 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. CONTENTS Fantasia in F minor K594; Fantasia in F minor K608; Fugue in G minor K401; Sonata in B flat K358; Sonata in C K52…