Sketch leaf (K. 626b/03,03)
de Wolfgang Amadeus Mozart
Mozart’s Sketch leaf (K. 626b/03,03) survives only as a scantly described fragment: no key, date, place of origin, or secure context is given in the modern catalogue record. It is often treated as a doubtful or possibly spurious item, and is sometimes loosely associated—without firm proof—with the compositional orbit of the unfinished Requiem (K. 626).
What Is Known
K. 626b/03,03 is catalogued simply as a single “sketch leaf”, with no key, no year, and no place specified in the reference listings that summarize K. 626b materials.[1] Unlike securely contextualized Mozart autograph sketches held in major repositories (which can often be dated by paper type, handwriting, or surrounding projects), this particular leaf is not widely documented in accessible institutional catalogues; its provenance and even attribution are therefore treated cautiously in secondary discussions.[1]
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In editorial practice, such an object sits close to the borderland of “Mozartiana”: items transmitted without a clear source trail can reflect anything from a genuine working jotting to a later copy, misattribution, or fabrication.[2]
Musical Content
No reliable, publicly available description of the notated music on the leaf (incipit, scoring, or identifiable thematic connection) can be cited from standard online reference or library records at present.[1] In the absence of an incipit or facsimile description, it is not possible to characterize its harmony, texture, or relation to Requiem materials without speculation.
[1] Wikipedia: Köchel catalogue — table entries summarizing K. 626b sketch leaves, including K. 626b/03,03 as “Sketch leaf” with no key/date/place given.
[2] Digital Mozart Edition (Mozarteum): New Mozart Edition online publication, Work Group 29 “Works of Dubious Authenticity” — outlines editorial principles and the handling of doubtful attributions and problematic transmission.