Symphony No. 33 in B♭ major, K. 319
von Wolfgang Amadeus Mozart
Mozart’s Symphony No. 33 in B♭ major, K. 319 was completed in Salzburg on 9 July 1779, when the composer was 23. Scored on an almost “chamber” scale, it achieves a striking brilliance and drive through concise thematic work, alert orchestration, and an unusually vivid finale—qualities that make it one of the most rewarding Salzburg symphonies to hear closely.
Background and Context
Mozart’s year 1779 marks a fascinating point of recalibration. Having returned from the difficult Mannheim–Paris journey (1777–78), he was once again employed in Salzburg under Archbishop Colloredo, a situation that could provide excellent musicians and regular occasions, but also sharp constraints on ambition and independence. In this environment Mozart produced a remarkable concentration of orchestral and concertante works, among them the “Posthorn” Serenade (K. 320), the Sinfonia concertante for violin and viola (K. 364), and three symphonies (K. 318, K. 319, K. 338).
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K. 319 belongs to this Salzburg group: music that is outwardly “practical” yet inwardly inventive. What makes Symphony No. 33 distinctive is not monumentality but finish—how much character Mozart draws from modest resources, and how decisively he moves beyond the earlier Salzburg symphony-as-overture model toward a taut four-movement argument.
Composition and Premiere
The autograph of the symphony bears Mozart’s date “Salzburg, 9 July 1779,” a rare piece of exact documentation for a Salzburg orchestral work.12 One complication, however, is structural: Mozart’s original score comprised only three movements (a pattern associated with Italianate symphonic practice), and the Menuetto was added later—most often connected with Mozart’s Viennese performances in the early 1780s.34
Because Salzburg court and cathedral documentation seldom provides the kind of premiere record found for public Parisian works, the circumstances of the first performance are not securely known. Modern commentators therefore tend to speak cautiously: the symphony was composed for Salzburg use in 1779, then adapted for later presentation beyond Salzburg (with the added minuet) when Mozart had reason to bring the work into Viennese concert life.3
Instrumentation
The scoring is lean even by Mozart’s late-1770s standards, and it is central to the symphony’s identity: transparency, quick conversational exchanges, and a string-led brilliance with winds used for color, punctuation, and occasional spotlight.
- Winds: 2 oboes, 2 bassoons
- Brass: 2 horns (in B♭)
- Strings: violins I & II, viola, cello, double bass
This compact orchestra is consistently noted in modern reference and program-note traditions, with the bassoons often functioning as a bass reinforcement and/or harmonic “thickener” rather than as independent obbligato soloists.14
Form and Musical Character
Mozart’s Symphony No. 33 is sometimes described as a “standard” Salzburg symphony; that label can mislead if it suggests routine inspiration. The work’s appeal lies in how energetically it argues its case, particularly in the outer movements, and in how it plays with expectations of symphonic rhetoric.
I. Allegro assai (B♭ major)
The first movement is in sonata-allegro form and announces, immediately, a bright public voice—yet its real interest is in the economy of its motivic work.1 A famous curiosity appears in the development: Mozart builds it around a compact four-note figure that does not feature as a principal theme in the exposition, an effect that can feel like a sudden tightening of focus and propulsion.1 (The figure is often remarked upon because of its resemblance to the celebrated four-note motif in the finale of the “Jupiter” Symphony, K. 551, though the later masterpiece transforms the idea within a very different contrapuntal world.)14
II. Andante moderato (E♭ major)
The slow movement shifts to the subdominant (E♭ major), a key relationship that, in Classical symphonies, often signals warmth and breadth. Here Mozart exploits the reduced orchestra to create a texture that is at once luminous and intimate: strings carry much of the lyrical discourse, with winds entering as refined highlights—less as a “separate choir” than as gently placed points of light.2
III. Menuetto (B♭ major)
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The later-added minuet does more than satisfy convention. It changes the symphony’s proportions, transforming a three-movement Italianate plan into the now-familiar four-movement cycle and thereby strengthening the sense of arrival in the finale.3 Heard in this way, the Menuetto functions as a hinge: courtly on the surface, but also a reset of energy and tempo profile before the concluding sprint.
IV. Finale: Allegro assai (B♭ major)
The finale is the symphony’s most immediately distinctive movement, propelled by near-continuous rhythmic motion—often articulated as flowing triplets—that produces a breathless brilliance without requiring a large orchestra.1 It is also a reminder of Mozart’s theatrical instincts: momentum is shaped in paragraphs, with quick turns, contrasts of texture, and a sense of “stage management” that keeps the listener’s ear alert to what will happen next.
Reception and Legacy
Symphony No. 33 occupies an intriguing position in Mozart reception. It is not among the late Viennese “canonical” symphonies most frequently held up as monuments; yet it is also far from a youthful apprentice work. It is a Salzburg symphony at the point where Mozart’s symphonic language becomes terser, more argument-driven, and more confident about what can be done with limited means.
Historically, the work is also notable for its afterlife in Vienna: the later addition of the minuet suggests Mozart’s own estimation that K. 319 was worth carrying forward and reshaping for new contexts.34 For modern listeners, its value lies precisely in that blend of practicality and imagination. In performances that respect its scale—crisp articulation, buoyant tempi, and transparent balances—the piece can sound less like “small Mozart” than like concentrated Mozart: a symphony that makes wit, propulsion, and formal clarity feel freshly minted.
[1] Wikipedia — overview, date (9 July 1779), movement list and formal notes, and general scoring.
[2] Boston Symphony Orchestra program note — discussion of orchestration and character (especially the Andante) and confirmation of scoring.
[3] Digital Mozart Edition (Mozarteum) — New Mozart Edition preface (English PDF) noting the symphony originally had three movements and the minuet was added later in Vienna.
[4] Boston Baroque program note — autograph dated 9 July 1779; three-movement original; later addition of the minuet for Vienna; comments on the four-note development figure.