Symphony No. 12 in G
ヴォルフガング・アマデウス・モーツァルト作

Composition & Context
Mozart composed Symphony No. 12 in G major, K.110/75b in the summer of 1771 in his native Salzburg, immediately prior to his second Italian journey (which took place August–December 1771). The symphony marks a moment of increasing scale and ambition in his early orchestral work: the opening movement is the longest he had yet written. It reflects Mozart’s growing mastery of the symphonic genre, moving beyond the three‐movement Italian overture model toward a full four‐movement structure.
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Instrumentation
The orchestration calls for strings (first and second violins, violas, cellos/basses), two oboes, two horns in G, two flutes, and two bassoons, with a continuo part typical of the era. The flutes and bassoons are used selectively (notably in the slow movement) to enrich the timbral palette. This instrumentation shows Mozart’s willingness to expand beyond very small ensembles and experiment with richer colours even at a young age.

Form & Musical Character
The work follows a four-movement plan:
Allegro (G major, 3/4) — a bold and expansive movement, for its time one of Mozart’s longest, featuring energetic themes and contrasting textures.
Andante (C major) — more lyrical and serene, with richer wind involvement (flutes, bassoons) giving a lighter, more refined character.
Menuetto & Trio (Menuetto in G major; Trio often in G major as well) — the minuet exhibits contrapuntal features (canon between strings) which point toward Mozart’s growing contrapuntal facility.
Allegro (G major, often 2/4) — a cheerful, brisk finale with clear, galant thematic material and a sense of joyous closure rather than heavy complexity.
Stylistically, the symphony balances the galant elegance of Mozart’s youth with hints of more advanced technique (e.g., contrapuntal devices in the minuet). The four-movement layout signals his move toward what would become the mature classical symphonic norm.
Reception & Legacy
While Symphony No. 12 is less frequently programmed than Mozart’s later major symphonies, it occupies an important place in scholarship as a clear marker of his early orchestral maturity. The autograph manuscript is preserved in the Jagiellonian Library in Kraków. Modern critical editions (such as the Neue Mozart‐Ausgabe) include it, often grouped with his early symphonies. The symphony has found a place in recordings of Mozart’s youth period and is valued for its charm, transparency and evidence of Mozart’s developmental trajectory. For example, interpretive commentary points to the minuet’s canon technique as showing Mozart’s awareness of his teacher Giovanni Battista Martini’s contrapuntal instruction. Because of its modest length and early date, it is often recommended as an accessible introduction to Mozart’s symphonic writing.
References
- https://en.wikipedia.org/wiki/Symphony_No.12%28Mozart%29
- https://imslp.org/wiki/Symphony_No.12_in_G_major%2C_K.110/75b_%28Mozart%2C_Wolfgang_Amadeus%29
- https://everything.explained.today/Symphony_No.12%28Mozart%29/
- https://it.wikipedia.org/wiki/Sinfonia_n.12%28Mozart%29
- https://www.8notes.com/scores/10998.asp
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