Untitled (lost) (K. 626b/15)
by Wolfgang Amadeus Mozart
Untitled (lost) (K. 626b/15) is a Supplement entry in the Köchel catalogue for which no music is known to survive. No key, scoring, date, or place of composition can be established, and the work’s authenticity is doubtful [1].
What Is Known
The Köchel catalogue records K. 626b/15 simply as an untitled work that is lost, without any surviving incipit (opening bars) or manuscript description from which one could infer genre, instrumentation, or even approximate period [1]. As a result, the attribution to Wolfgang Amadeus Mozart (1756–1791) remains uncertain; it may represent a mislaid reference, a misattributed scrap once associated with Mozart’s name, or a now-untraceable item of unknown origin.
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Although its number sits near the vicinity of the Requiem in D minor, K. 626, the catalogue entry does not in itself demonstrate any musical or documentary connection to the Requiem or to Mozart’s final months in Vienna (1791) [1].
Musical Content
No musical text survives for K. 626b/15, and no incipit is transmitted in standard reference listings. Accordingly, its musical character, performing forces, and stylistic profile cannot be described from primary evidence [1].
[1] Wikipedia — Köchel catalogue: table entry listing “626b/15 Untitled (lost)” among supplementary/lost items