Trio movement in C major (fragment), K. 687
沃尔夫冈·阿马德乌斯·莫扎特
Mozart’s Trio movement in C major (K. 687) is an unfinished, single-leaf fragment—catalogued for two violins and cello—and is typically dated broadly within his Vienna years (1782–1791). Although slight in scale, it offers a fleeting glimpse of Mozart’s chamber-music thinking at roughly the period when he was consolidating a more conversational, trio-style texture beyond the quartet.
What Is Known
The Trio movement in C (K. 687) survives as an uncompleted work transmitted in an autograph source: a full score on a single leaf (Partitur: 1 Bl.). The Köchel Verzeichnis lists it as a fragment for two violins and violoncello (vl1, vl2, vlc) and classifies its authenticity as verified. It is dated only broadly—Vienna, 1782–1791—and the surviving copy description (“beginning of a trio for 2 violins and bass”) underlines that what remains is merely the opening portion of a movement rather than a complete design.[1]
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Musical Content
What survives reads as the start of a C-major string-trio movement, with the upper parts led by the two violins and a supporting bass line in the cello. Even in fragmentary form, the scoring implies Mozart’s characteristic preference for clear thematic presentation and textural dialogue—the kind of transparent trio writing that, in more fully realized works, allows melodic material to circulate among parts rather than remaining fixed in a single “solo” line. The absence of a completed continuation (and thus of any secure formal trajectory) makes it safest to hear K. 687 as a preserved incipit: a promising opening gesture without the chance to unfold into development or cadence on Mozart’s terms.[1]
[1] International Mozarteum Foundation (Köchel Verzeichnis): work entry for KV 687 (status, dating, instrumentation, and source details).