Symphony No. 6 in F major (K. 43)
par Wolfgang Amadeus Mozart
Mozart’s Symphony No. 6 in F major (K. 43) belongs to the remarkable cluster of works he wrote at age eleven during the family’s unsettled months between Vienna and Moravia in 1767. Though firmly a product of juvenilia, it is a milestone in his symphonic thinking: a compact, four-movement design with unusually detailed inner-string writing for so early a work.
Mozart’s Life at the Time
In 1767, Wolfgang Amadeus Mozart (1756–1791) was eleven years old, moving with his family between Vienna and Moravia during a period disrupted by a smallpox outbreak in Vienna. The Köchel-Verzeichnis entry for K. 43 places the work’s dating across Salzburg, Vienna, and Olomouc (Olmütz), from 12 September 1767 into December 1767—dates that align with the Mozarts’ enforced travel and temporary relocations that year [1].
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What makes K. 43 particularly telling in Mozart’s biography is its blend of routine and ambition. By 1767 he already had experience in the genre, but this symphony shows him testing a more “grown-up” four-movement plan—adding a minuet as an interior movement—at a moment when he was still writing for practical occasions and local forces rather than for posterity [2]).
Composition and Manuscript
The work is traditionally dated to 1767, with scholarship often suggesting it was begun in Vienna and completed in Olomouc, where the family spent several difficult weeks in late 1767 [2]). The International Mozarteum Foundation’s Köchel-Verzeichnis record confirms the work is extant, authentic, and survives in autograph form [1].
K. 43 is also associated with a documented early performance: it was apparently heard in Brno on 30 December 1767, in a concert connected with the Mozart family’s Moravian stay [2]). Even if the symphony is not among the best-known in today’s concert life, this kind of contextual anchoring—date, place, and identifiable performance circumstances—is precisely what makes it “moderately documented” rather than merely conjectural.
Musical Character
K. 43 is cast in four movements, a significant step for the young Mozart at a time when many early symphonies still followed the three-movement (fast–slow–fast) pattern [2]). Its movement plan is:
- I. Allegro (F major)
- II. Andante
- III. Menuetto and Trio
- IV. Allegro
In scoring, the Köchel-Verzeichnis lists an efficient “standard” early-classical orchestra—2 oboes, 2 horns, and strings—but with an important wrinkle: Mozart writes two distinct viola parts (vla1 + vla2), enriching the inner texture beyond the more typical single viola line of many contemporaneous works [1]. That inner-part vitality is part of why K. 43 deserves attention today: it shows Mozart learning to make the middle voices expressive and structurally necessary, not merely harmonic filler.
Another distinctive feature lies in the slow movement’s timbral imagination. Sources note that flutes replace oboes in the Andante, and that the movement draws on thematic material from Mozart’s Latin school opera Apollo et Hyacinthus (K. 38) [2]). The gesture is characteristic of an eleven-year-old composer who thinks pragmatically—reusing good ideas—yet it also signals a theatrical instinct: lyrical material from vocal drama is repurposed as instrumental song.
In sum, Symphony No. 6 is not “minor Mozart” in the sense of being negligible; rather, it is minor in scale but major in documentary and stylistic interest. Heard against the backdrop of his later Viennese symphonies, K. 43 offers something rarer than polish: an audible snapshot of Mozart, still a child, experimenting with formal breadth (four movements) and orchestral depth (divided violas and coloristic wind substitutions) at the very beginning of his long relationship with the symphony.
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[1] International Mozarteum Foundation, Köchel-Verzeichnis entry for KV 43 (dating, authenticity/transmission, and instrumentation listing).
[2] Wikipedia: Symphony No. 6 (Mozart) — overview of composition context, Brno performance date, four-movement structure, and thematic link to Apollo et Hyacinthus.