The musicologist
Alfred Einstein suggested that the Menuetto from this work might be a piano arrangement of the "missing movement" of Mozart's Eine kleine Nachtmusik, K. 525 (1787).[3]
The Andante is an arrangement of the variations movement of the concerto
K. 450 in B-flat major, and the Rondo incorporates arrangements of passages from the finales of the B-flat concerti K. 450,
K. 456, and
K. 595.
Recordings
Vincenzo Balzani: Pagine rare per pianoforte / Wolfgango Amadeo Mozart (1980), Ducale CD 349/350[4]