Kyrie (lost; doubtful), K. Anh.C 1.13
ヴォルフガング・アマデウス・モーツァルト作
Mozart’s Kyrie (K. Anh.C 1.13) is a lost and dubiously attributed sacred movement, associated in catalogues with Salzburg in 1780, when the composer was 24. No musical text survives, and the work is known only from catalogue-level documentation.
What Is Known
A Kyrie is listed among the works of doubtful or uncertain attribution as K. Anh.C 1.13, described as lost and dated to 1780 in Salzburg.[1] Beyond that catalogue entry, no autograph, copy, or printed score is presently available for study, so neither scoring nor length can be verified from surviving musical sources.[1]
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The Salzburg date places the item in the period just before Mozart’s final break with Archbishop Colloredo’s court (spring–summer 1781). In 1780 he was still producing church music for Salzburg institutions, often in concise “small church” formats suited to local liturgical practice, which makes the catalogue’s classification as a standalone Kyrie plausible in general terms.[2]
Musical Content
Because no notated music for K. Anh.C 1.13 is known to survive, its key, vocal/instrumental forces, and musical character cannot be described with confidence, and no thematic incipit is available from the usual archival transmission.[1]
[1] Wikipedia — Köchel catalogue entry listing “C 3.06 | Kyrie (lost; doubtful) | 1780 | 24 | Salzburg” (used here for the basic catalogue-level data and the statement that the work is lost/doubtful).
[2] Internationale Stiftung Mozarteum, Köchel-Verzeichnis (KV) — KV 257 “Missa in C” page (used for contextual confirmation that Salzburg masses comprise Ordinary movements including Kyrie, and for Salzburg church-music context in Mozart’s output).