Solos for Cello (lost) (K. 33b)
ヴォルフガング・アマデウス・モーツァルト作

Solos for Cello (K. 33b) is a lost, probably doubtful set of pieces for unaccompanied cello, associated with Mozart’s stay at Donaueschingen in 1766, when he was ten years old. No music survives, and the works are known only from an early archival listing.
Mozart's Life at the Time
In 1766, the ten-year-old Wolfgang Amadeus Mozart was travelling with his family and giving performances across German-speaking courts and cities. The association of K. 33b with Donaueschingen places it in the orbit of the princely Fürstenberg court, where the Mozarts were received during their long tour of 1763–66 and where the young composer was evidently expected to supply occasional new pieces as well as dazzle at the keyboard and violin.[1]
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Musical Character
Leopold Mozart’s 1768 catalogue of his son’s early works includes “various solos” for several instruments and, specifically, “for the violoncello … for the Prince zu Fürstenberg,” identified in modern cataloguing as K. 33b.[1] Because no manuscript, incipits (opening bars), or contemporary descriptions of the cello pieces are known to survive, their key, number of movements, and style cannot be responsibly reconstructed here; even the attribution itself is often treated as doubtful in modern reference practice.[2]
[1] Digital Mozart Edition (Mozarteum): Leopold Mozart’s catalogue of early works (Vienna, 1768) — includes the entry for “various solos … for the violoncello … for the Prince zu Fürstenberg,” identified as K. 33b (lost).
[2] mozart.gr: “Mozart: Lost Works” — includes K33b “Solos for Cello” in a list of lost works and reflects the work’s uncertain/doubtful status in secondary reference compilations.




