Andante with Five Variations in G major, K. 501
ヴォルフガング・アマデウス・モーツァルト作
Mozart’s Andante with Five Variations in G major, K. 501 is a compact, brilliantly crafted set for piano four hands, completed in Vienna on 4 November 1786, when the composer was 30. Written for the thriving culture of domestic music-making, it shows how much wit, color, and structural finesse Mozart could pack into a miniature genre.12
Background and Context
Vienna in the mid-1780s was a city of pianists: aristocratic amateurs, accomplished pupils, and professional virtuosi all fueled a strong market for keyboard music intended for the home. Piano four-hands—two players at one instrument—was especially popular because it turned a single keyboard into a sociable “ensemble,” allowing larger textures, orchestral effects, and a friendly kind of virtuosity without requiring multiple instruments.
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Mozart’s four-hand output is not large, but it is unusually distinguished: alongside the Sonata in F major, K. 497 and the later Sonata in C major, K. 521, K. 501 belongs to the mature Viennese group that explores the full range of four-hand idioms (dialogue between the partners, dramatic registral contrasts, and quasi-orchestral sonorities).3 K. 501 is smaller in scale than the sonatas, yet it deserves attention for exactly that reason: it is salon music that thinks like chamber music—economical, conversational, and sharply characterized.
Composition
The Andante with Five Variations is securely dated to 4 November 1786, a date that appears both on the autograph and in Mozart’s own thematic catalogue (Verzeichnüss aller meiner Werke).3 The work is in G major and was composed in Vienna.3
One striking detail in the source history is that Mozart initially conceived the piece for two separate keyboard instruments: the first page originally carried the designations “Cembalo primo” and “Cembalo secondo,” which Mozart later replaced with “Mano dritta” and “Mano sinistra,” signaling the practical shift to four hands at one keyboard.3 That little revision is revealing. It suggests Mozart’s sensitivity to the domestic market (where one good instrument was far more common than two), while also underlining that the piece’s musical logic is inherently duet-like.
Form and Musical Character
K. 501 comprises a theme (Andante) followed by five variations—an outwardly simple plan that Mozart enlivens through texture, register, and the changing relationship between the two players.23
- Theme: Andante (G major)
- Variation I
- Variation II
- Variation III
- Variation IV (G minor)
- Variation V (expanded final variation)
Rather than treating variation technique as mere decoration, Mozart uses it to re-stage the theme in different “social roles.” At times the primo part takes a singing, cantabile line while the secondo provides a steady foundation; elsewhere the partners exchange figures so that accompaniment becomes melody and melody becomes filigree. This kind of role-switching is one reason four-hand writing can feel theatrically alive—listeners can almost hear two personalities sharing the same keyboard.
Two features are particularly distinctive within the set. First, the turn to the minor mode in Variation IV (G minor) functions as an expressive shadow across an otherwise sunny G-major landscape, a brief dramatic intensification that recalls Mozart’s larger-scale habit of deepening a work’s emotional range through a well-timed minor inflection.2 Second, the concluding Variation V is markedly more expansive than the preceding ones, giving the set a true sense of destination rather than a polite fade-out.2 In miniature, Mozart achieves what his greatest variation finales often do: a feeling that variety is being gathered into a culminating, more public gesture.
Reception and Legacy
K. 501 has never been among Mozart’s most famous keyboard works, perhaps because it sits between categories: too refined to be a pedagogical trifle, yet too concise to compete in the repertory with the big four-hand sonatas. Even so, it has remained in circulation as a choice example of Classical four-hand writing—often valued by pianists precisely for its balance of charm and craft.
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In performance, the work offers something modern audiences easily recognize: the pleasure of collaboration. The two players do not simply “fill out” harmony; they negotiate texture, timing, and color together, creating a kind of intimate chamber music on a single instrument. Heard with that in mind, Mozart’s Andante with Five Variations becomes more than domestic entertainment: it is a small study in conversation, contrast, and compositional economy—Viennese Classicism at its most elegant and human-scaled.31
[1] IMSLP work page (cataloguing, scoring, links to editions): “5 Variations in G major, K.501 (Mozart)”
[2] French Wikipedia overview (structure notes incl. G-minor Variation IV and expanded Variation V; approximate duration)
[3] G. Henle Verlag preface PDF (scholarly editorial notes on Mozart’s four-hand works; dating of K. 501 and source details)