Sketch leaf (doubtful, lost), K. 626b/03,02
ヴォルフガング・アマデウス・モーツァルト作
The Sketch leaf (doubtful, lost) (K. 626b/03,02) is a reported single page of musical notation once attributed to Wolfgang Amadeus Mozart (1756–1791), but now regarded as of doubtful authenticity. The manuscript is lost, and no secure key, date, place of origin, or provenance is known for the item as it is listed in modern Köchel catalog data.[1]
What Is Known
K. 626b/03,02 survives only as a catalogue report: it is described tersely as a “sketch leaf,” with the further qualifiers “doubtful” and “lost.”[1] In other words, neither the music written on the page nor any identifying paratext (such as an incipit, instrumentation, or intended work) is presently available for study.
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Although it is sometimes grouped in modern reference contexts alongside “supplements” connected with Requiem in D minor, K. 626, no documented musical or historical link can be demonstrated from the surviving description alone.[1]
Musical Content
Because the leaf is lost and the Köchel listing does not transmit even a short musical incipit, it is not possible to describe its themes, texture, scoring, or formal intention in a responsible way beyond the generic characterization “sketch.”[1]
[1] Wikipedia — Köchel catalogue (table entry listing “626b/03,02 — Sketch leaf (doubtful, lost)”).