Symphonies (lost) (K. 643)
di Wolfgang Amadeus Mozart
Mozart’s Symphonies (lost) (K. 643) refers to one or more putative symphonic works from 1768, when he was about twelve. No score is known to survive, and the attribution itself is treated as doubtful, leaving only a faint documentary trace rather than a performable symphony.
Mozart's Life at the Time
In 1768, Wolfgang Amadeus Mozart (1756–1791) was twelve years old, in the midst of his intense childhood apprenticeship as a composer and performer. The Köchel catalogue associates K. 643 with that year, but neither a reliable place of composition nor a secure chain of sources can be established, and the item is generally regarded as a lost work of doubtful authenticity [1].
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Musical Character
Because no musical text for K. 643 is known to survive, its key, instrumentation, number of movements, and stylistic profile cannot be described with confidence. At most, its listing reminds us that Mozart’s symphonic activity in the late 1760s—when he was absorbing the prevailing “Italianate” orchestral idiom of brisk outer movements and lyrical slow sections—was broader than the securely transmitted works alone can demonstrate [1].
[1] Wikipedia — overview list and context for Mozart symphonies of spurious or doubtful authenticity, including lost/doubtful items