Wolfgang Amadeus MOZART (1756-1791). [Music for keyboard] (Vienna, Steiner, [early 19th century]). 5 oblong folio volumes (approx. 23x33cm), engraved titles and music, half morocco tan with corners, ornate smooth spines, gilt titles: Sonaten 4, 5, 6; Sonaten mit violino 7-12; Quartetten 27-29; Quintette 30; Thema mit Variationen 32-34 (period binding). Collection of keyboard scores in uniform contemporary binding, including the following 5 volumes: - 2 Sonaten, Viertes Heft, K.333 & K.284. - 3 Sonaten, Fünftes Heft, K.310, 576 & 533/494. - 2 Sonaten und 3 Fantasien, Sechstes Heft, Sonata F major (2 movements), Fantasia K.475, Sonata K.457, Fantasia K.397, Fantasia and Fugue K.394, Fantasia K.396. - Collection of violin sonatas (piano part), Siebentes-Zwölftes Heft. - Piano quartets (piano part), Sieben und Zwanzigstes-Neun und Zwanzigstes Heft. - Quintets with piano (piano part), Dreysigstes Heft. - 5 Thema mit Variationen für das Pianoforte, Zwey... Drey...Vier und Dreysigstes Heft, K.352, 264, 353, 455, 354, Anh. 285, 573, 513, 265, 398, 179, 500, Theme and Variations in D major K.180, Ten Variations in A major. Provenance: Pierre Bergé (ex-libris; IIIrd sale, 208 June 2017, no. 635).