March (lost), K. 676
von Wolfgang Amadeus Mozart

Mozart’s March (K. 676) is a lost and poorly documented orchestral work, tentatively dated to 1780, when the composer was 24. No score or parts are known to survive, and modern reference sources treat the piece as of doubtful authenticity rather than a secure item in the canon.
What Is Known
The work listed as a March (K. 676) is generally described as lost: neither an autograph manuscript nor performing materials are known today, and the piece is known chiefly from catalogue references rather than from any surviving musical text. In addition, its attribution to Wolfgang Amadeus Mozart (1756–1791) appears uncertain, and it is best regarded as a doubtful (possibly spurious) entry rather than an extant orchestral march that can be described, edited, or performed in any dependable way.[1]
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A date around 1780 is commonly associated with K. 676 in modern cataloguing, placing it in the period just before Mozart’s decisive move from Salzburg toward Vienna (and just before Idomeneo in Munich, 1781). Yet without any surviving music, the occasion, instrumentation, and even the key remain unknown.
Musical Content
Because no musical source is currently available, nothing reliable can be said about K. 676’s thematic material, scoring, or formal design beyond the generic label “march.” Any attempt to connect it with Mozart’s surviving marches (for theatre, serenades, or ceremonial use) risks confusing K. 676 with better-attested works in the same genre.[2]
[1] Köchel catalogue (overview; includes category of lost authentic works and context for lost entries)
[2] Wikipedia: Mozart symphonies of spurious or doubtful authenticity (background on doubtful/spurious attributions in Mozart cataloguing)




