Fantasy No.4, K.475
Mozart2,613
This is free piano sheet music for Piano Sonata in B flat major, K.498a, Mozart provided by allpianoscores.com
The Piano Sonata in B-flat major, K. 498a (Anh. 136), is a piano sonata in four movements. It was first printed in 1798 by P. J. Thonus in Leipzig on behalf of Breitkopf & Härtel and attributed to Wolfgang Amadeus Mozart; an edition printed in c.  1805 already credited it as opus 26 of the Thomascantor August Eberhard Müller (1767–1817). Some publications still attribute it to Mozart, often as Piano Sonata No. 20. The movements are: Allegro Andante MenuettoAllegro (in B-flat major, 3/4 time, 35 bars)Trio (in E-flat major), 3/4 time, 24 bars) Rondo – Allegro A typical performance lasts for about 19 minutes. The musicologist Alfred Einstein suggested that the Menuetto from this work might be a piano extract of the "missing movement" of Mozart's Eine kleine Nachtmusik, K. 525 (1787).