Allegro for Piano & Violin in G major (fragment), K. 546a
di Wolfgang Amadeus Mozart
Mozart’s Allegro for piano and violin in G major (K. 546a) is a short, unfinished chamber-music fragment from Vienna in 1788, when the composer was 32. Although only a couple of pages survive, the sketch points to the fluent, keyboard-led dialogue typical of his late violin sonatas and variation works.
What Is Known
The surviving sources preserve a single incomplete Allegro movement for piano and violin in G major, generally dated to Vienna, 1788.[1][2] It is transmitted and discussed within the Neue Mozart-Ausgabe volume for Mozart’s sonatas and variations for keyboard and violin, where K. 546a appears among the appendix works for the genre.[2] No secure evidence is commonly cited for a first performance, and the fragment does not appear to have been completed or prepared for publication in Mozart’s lifetime.
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In its likely context—Mozart’s Vienna of 1788, a year that also produced major instrumental works—K. 546a reads as a “working” piece: a projected movement that may have been intended to become part of a larger sonata design, but was abandoned before its musical argument could be rounded off.[2]
Musical Content
What survives is an Allegro opening for keyboard with violin, in which the piano appears to carry the principal thematic material while the violin answers and reinforces it—consistent with Mozart’s mature practice in the genre, where the keyboard typically remains in the foreground even as the violin writing is increasingly independent.[3] The fragment breaks off before any full sonata-allegro trajectory (exposition, development, recapitulation) can be confirmed from the surviving pages, leaving the larger plan—whether a complete sonata movement or something more variation-like—only partially legible in the musical text.[2]
[1] IMSLP work page: Violin Sonata in G major, K.Anh.47/546a (K. 546a) — basic identification, instrumentation, and NMA source reference.
[2] International Mozarteum Foundation (DME): New Mozart Edition (NMA) VIII/23/2, English preface PDF — discusses appendix sonata movements including K. 546a and its placement within the keyboard-and-violin corpus.
[3] Köchel Verzeichnis (International Mozarteum Foundation): background on Mozart’s violin sonatas in Vienna and the typical keyboard-led balance in the genre (contextual).