- Köchel Number
- K9 626b/56 | K6
- Genre
- Supplement
- Form
- Supplement
The entry “Autograph musical manuscript” (K. 626b/56) is a lost item listed in the Köchel Supplement, with no surviving music from which to establish its key, scoring, date, or place of origin [1]. It is therefore treated today as a doubtful or possibly spurious attribution rather than a securely identifiable Mozart work.
What Is Known
K. 626b/56 is transmitted only as a brief catalogue entry—“Autograph musical manuscript” (Autographisches Musikmanuskript)—and is explicitly described as lost [1]. No extant score, sketch, or part appears to be traceable in modern library holdings, and the entry as currently published supplies no key, instrumentation, incipit (opening notes), date, or place of composition [1]. With no musical text to examine and no contextual details attached to the record, the attribution cannot be verified; accordingly, it is best regarded as of doubtful authenticity (and potentially spurious) within the broad landscape of works once credited to Mozart but later questioned by scholarship [2].
Musical Content
Because the manuscript is lost and no incipit or description of its contents survives in the published catalogue entry, nothing reliable can be said about its genre, forces, formal design, or even whether it represented a complete piece, a draft, or a few notated bars [1].