Wolfgang Amadeus MOZART (1756–1791). Two German Arias to Be Sung at the Keyboard, Set to Music by Mr. Kapellmeister W.A. Mozart, “Part 1” (ms): Abend-Empfindung [KV 523] (Vienna, Artaria, [1789]); oblong folio, 11 pages, in a red chagrin-patterned percaline cardboard binding. Very rare first edition, 2nd printing (with price corrected by hand from 30 to 36 xr). Engraved title and music; title illustrated with a lovely vignette. Cotage 240. Haberkamp (pp. 289–290) lists only 4 copies. Ex libris signature “Nina Hubatius.”