Allegretto in B♭ major (fragment), K. 710
von Wolfgang Amadeus Mozart
Mozart’s Allegretto in B♭ major (K. 710) is a brief surviving fragment, preserved in autograph and associated with his Vienna years (dated broadly 1784–1791). It is transmitted on a single leaf and is variously described as for clavier (keyboard) or possibly as the basis of a dance-ensemble piece, though the intended scoring cannot be fixed from the surviving evidence.[1]
What Is Known
The Internationale Stiftung Mozarteum’s Köchel-Verzeichnis entry identifies K. 710 as an authentic, extant uncompleted work in B♭ major, titled Allegretto in B flat for clavier or dance ensemble.[1] The source is an autograph (Mozart’s own hand), described as a single leaf with two written pages (“Partitur: 1 Bl. (2 beschr. S.)”) and dated 1788 in the catalog’s source note.[1]
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Although often placed around 1785 in secondary listings, the Mozarteum catalog’s safer placement is the broad Vienna window 1784–1791.[1] In biographical terms, this is the period in which Mozart, in his late twenties, was writing at high pressure for Vienna’s concert life—especially keyboard works and dances for practical use—so a short Allegretto that hovers between piano piece and dance draft fits the working habits of these years.[1]
Musical Content
Only a small span of music survives, enough to suggest a moderate, dance-leaning character typical of an Allegretto rather than a large formal design.[1] The ambiguous designation (“clavier or dance ensemble”) implies that what is on the page may read convincingly at the keyboard while also functioning as a short score or reducible draft for an ensemble dance; without a completed continuation or explicit scoring indications, however, any more specific claim about instrumentation or form goes beyond what the source securely supports.[1]
[1] Internationale Stiftung Mozarteum, Köchel-Verzeichnis entry for KV 710 (status, dating range, source description: autograph, single leaf with two written pages).