9 Variations in D major on a Minuet by Duport, K. 573
by Wolfgang Amadeus Mozart
Mozart’s 9 Variations in D major on a Minuet by Duport (K. 573) is a late, concentrated essay in the art of keyboard variation, completed in Potsdam on 29 April 1789, when the composer was 33. Built on an unassuming minuet by the Prussian court cellist Jean-Pierre Duport, the set turns courtly elegance into a small drama of colour, counterpoint, and harmonic surprise.
Background and Context
In the spring of 1789, Wolfgang Amadeus Mozart (1756–1791) left Vienna on a long journey north with his patron Prince Karl Lichnowsky, travelling via Dresden and Leipzig to Berlin and Potsdam. The trip was intended to open professional doors—above all at the court of the cello-playing King Friedrich Wilhelm II of Prussia—and it also placed Mozart in direct contact with a distinguished circle of Prussian chamber musicians. Henle’s commentary links K. 573 to this tour and frames it as a courteous homage to Jean-Pierre Duport (1741–1818), the king’s royal chamber music director and a celebrated cellist-composer at court.[1]
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That the theme comes from Duport is not incidental. Like Mozart’s other independent keyboard variation sets, K. 573 takes a pre-existing melody and treats it as a platform for invention rather than mere embellishment—an approach rooted in Mozart’s public persona as an improviser, for whom variations could function as a showcase of wit, control, and spontaneity.[2]
Composition
Mozart completed K. 573 in Potsdam on 29 April 1789.[3] The theme is a minuet taken from Duport’s set of six sonatas for cello and basso continuo, Op. 4 (specifically, from the last sonata of the collection), a choice that suggests Mozart was responding to music he encountered in Prussian court circles.[3]
Chronologically, the work belongs to the same late creative phase as the Piano Sonata in B♭ major, K. 570 (February 1789) and stands close to the beginning of the so-called “Prussian” chamber works (notably the string quartets K. 575, K. 589, and K. 590). For listeners who know Mozart mainly through the grand public statements of the piano concertos or the operas, K. 573 offers something different: a private laboratory in miniature, where refinement of texture and harmony matters more than overt display.[3]
Form and Musical Character
The work presents a Theme (Menuet) followed by nine variations. In broad outline it follows a pattern that is characteristic of Mozart’s standalone variation sets: the writing tends to grow more intricate and demanding across the cycle, and the later variations typically heighten contrast—often by turning to the parallel minor and then preparing a quicker, more brilliant close.[2]
What makes K. 573 especially deserving of attention is the late-style balance between surface charm and deeper harmonic and contrapuntal thinking. Rather than treating the minuet as a vehicle for flamboyant keyboard figuration, the variations frequently work with economical scalic and arpeggiated patterns that clarify (and subtly transform) the theme’s profile.[3]
Several details highlight Mozart’s mature imagination within a modest frame:
- Textural intelligence. The first variation has been noted as reminiscent in texture of the contemporaneous Piano Sonata in B♭ major, K. 570, hinting that Mozart’s “large” keyboard language and his occasional pieces are closely related.[3]
- Chromatic shading. The cycle’s more introspective side emerges through chromatic inflections that complicate the theme’s simple harmonic skeleton; the minore variation (in D minor) is singled out as a point where chromaticism deepens character rather than merely intensifying brilliance.[3]
- A “late Mozart” sense of drama in miniature. Even within the social poise of a minuet, Mozart can pivot quickly between lightness and gravity—those “rapid emotional leaps” that feel familiar from the late piano concertos, now compressed into short, sharply profiled panels.[3]
In sum, K. 573 is not a grand cycle like Ah, vous dirai-je, Maman, K. 265/300e, but it embodies a more inward late aesthetic: variation technique used not only to decorate, but to interpret a theme—testing its harmonic implications, its capacity for contrapuntal enrichment, and its emotional range.
Reception and Legacy
Although K. 573 sits somewhat off the beaten track compared to Mozart’s sonatas and concertos, it has long been circulated in printed editions and remains available today in scholarly Urtext form (for example in the Neue Mozart-Ausgabe volume of keyboard variations).[4]
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Modern performers often value the set precisely because it is a late work on a small scale: it can function as an elegant recital item, a stylistic bridge between Classical variation practice and the more psychologically charged variation sets of the early Romantic era, and a compact study in Mozart’s ability to make “courtly” material speak in several voices at once. Heard with attention to its chromatic turns and its quietly cumulative architecture, K. 573 feels less like a minor occasional piece than a distilled example of Mozart’s mature keyboard craft—graceful on the surface, but intellectually alive throughout.[2]
[1] G. Henle Verlag, work page and commentary for *9 Variations on a Minuet by Duport*, K. 573 (context of the 1789 Prussian journey; homage to Duport).
[2] Mozarteum Foundation (Köchel Catalogue online), general description of Mozart’s keyboard variation sets and their typical dramaturgy (minor-mode slow variation leading to a fast finale).
[3] Liner notes PDF (Kristian Bezuidenhout, *Mozart: Keyboard Music Vols. 8 & 9*), giving completion date (Potsdam, 29 April 1789), Duport Op. 4 source, and stylistic observations on texture and chromaticism (including the D-minor *minore* variation).
[4] IMSLP work page for K. 573, including bibliographic details and reference to the Neue Mozart-Ausgabe (NMA IX/26) keyboard variations volume.