- Composer
- Wolfgang Amadeus Mozart (1756–1791)
- Work
- Symphony No. 40 in G minor, K. 550
- Key
- G minor
- Composed
- Summer 1788, Vienna
- Movements
- 4 movements, approx. 28–33 min
I. Molto allegro (G minor)
II. Andante (E-flat major)
III. Menuetto: Allegretto (G minor)
IV. Finale: Allegro assai (G minor) - Instrumentation
- Strings, flute, oboes, clarinets (revised version), bassoons, horns
- Premiere
- ca. 1788 (no documented premiere record)
Three symphonies in six weeks — only one refused to end in major
On July 25, 1788, Mozart entered a symphony in G minor into his personal catalog. He had finished a symphony in E-flat major less than a month earlier and would complete the massive C major “Jupiter” just sixteen days later. Three symphonies in six weeks. He had no commission, no scheduled performance, and no obvious practical reason to write any of them. At thirty-two, Mozart was drowning in debt and had recently buried his infant daughter, Theresia. The Forty-First Symphony would become his last. The Fortieth is the one that offers no consolation.
Minor keys are an anomaly in the composer’s symphonic catalog. Of his forty-one symphonies, only two abandon the major mode. Both are anchored in G minor: No. 25, written at seventeen, and No. 40, composed fifteen years later. This tonality carried a specific, almost physical weight for Mozart. The String Quintet K. 516, the Piano Quartet K. 478, and the Queen of the Night’s second aria in The Magic Flute all operate within this exact tonal landscape. G minor was never a matter of mere contrast. It was a dedicated vocabulary for grief.
The Summer of 1788
Mozart’s career in Vienna had stalled by 1788. The subscription concerts that once filled his calendar had evaporated. Not a single “academy” took place that year. Distracted by Austria’s war with the Ottoman Empire, the local aristocracy looked elsewhere for entertainment. Even his official post offered little padding. As court chamber composer, Mozart drew a humiliating 800 gulden per year—less than half the salary of Gluck, his predecessor.
Reading his letters to the fellow Mason Michael Puchberg feels like witnessing a slow collapse. He begged for cash. He offered frantic, impossible guarantees of repayment. “My fate, but only in Vienna, is so against me,” he wrote. Constanze, his wife, was away in Baden enduring spa treatments for a chronic illness, a necessity that drained their meager funds further. Death, meanwhile, shadowed their nursery. Of the six children born to the couple, only two survived to adulthood.
Against this backdrop of domestic ruin, Mozart drafted three symphonies in a matter of weeks. The sequence is an exercise in stark contrasts. No. 39 in E-flat major begins with a stately French overture before giving way to festive brilliance. No. 41, the “Jupiter,” builds toward a finale of severe contrapuntal density—a landmark in symphonic history. Between them sits No. 40. It is the only work of the three in a minor key. It deploys no trumpets and no timpani. It refuses to celebrate.
The Sturm und Drang Inheritance
In the late eighteenth century, G minor was not merely a key but a psychological diagnosis. Christian Schubart’s Ideen zu einer Ästhetik der Tonkunst codified the tonality as the domain of “discontent, uneasiness, worry over a failed scheme.” Haydn had already mined this vein for his fierce Sturm und Drang symphonies in the early 1770s. Johann Christian Bach, who shaped Mozart’s musical consciousness in London, relied heavily on its shadows. Long before Berlioz and the Romantic vanguard claimed a monopoly on musical suffering, the classical style had engineered its own architecture of grief.
Fifteen years earlier, a seventeen-year-old Mozart had hurled himself into this exact tradition with the Symphony No. 25 in G minor (1773). That juvenile work relies on blunt force: furious syncopations, jagged leaps, and the immediate, aggressive assault familiar to anyone who has seen the opening sequence of Amadeus. Symphony No. 40 operates on an entirely different plane. The anguish is no longer externalized. Instead, the composer forces his despair into the strictures of sonata form, creating a friction so intense that the structural seams threaten to split.
Two Versions
The existence of two distinct scores offers a rare, tangible clue to the symphony’s early life. Mozart’s original manuscript dictates a lean woodwind section: one flute, two oboes, two bassoons, two horns, and strings. Clarinets are entirely absent. Sometime later, he returned to the music. He drafted two clarinet parts, poaching melodic lines from the oboes to make room. This revision fundamentally alters the orchestral balance. In the slow movement especially, the new instruments cast a dark, burnished glow over the ensemble.
Dating this second draft remains a speculative game. Musicologists frequently point to a 1791 concert directed by Antonio Salieri as the likely catalyst. The logic holds up. Composers rarely bother to re-orchestrate music destined to sit in a drawer. Today, modern symphony orchestras default to the revised score, but period-instrument groups increasingly champion the austere original. Comparing them exposes the fragility of acoustic color. It demonstrates how a few ounces of wood and breath can alter the psychological weather of a work.
First Movement: Molto allegro
No introduction. Where convention calls for a slow, stately preamble, Mozart drops the listener straight into the current. Violas churn out a restless eighth-note pulse; above this anxious motor, the violins trace their famous half-step descent. Ubiquity has dulled its edge. Recycled in film scores and pop arrangements, the theme’s sheer familiarity obscures its structural daring. The chromaticism embedded in the motif generates a harmonic instability that still feels distinctly modern.
Formally, the exposition pits this turbulent G-minor material against a more yielding second theme in B-flat major. The relief is strictly temporary. Once the development begins, Mozart ruthlessly fragments the opening motif. He scatters the pieces across the orchestra, forcing them through increasingly remote keys. A dense passage of stretto—voices overlapping in tight succession—pulls the counterpoint taut. When the recapitulation arrives, it brings no comfort. The second theme returns, dragged down into the inescapable gravity of G minor. It is a trajectory of relentless harmonic logic, one that paves the way directly for Beethoven’s Fifth Symphony.
Herbert von Karajan’s 1970s recording with the Berlin Philharmonic embodies a distinctly heavyweight tradition. He demands a massive string tone and enforces a seamless legato, treating the score as an exercise in sheer orchestral mass. Under his baton, the development section does not merely agitate; it overwhelms.
Second Movement: Andante
Cast in E-flat major, the Andante offers an illusion of repose. The strings trace a lyric contour, drawing a genial reply from the woodwinds. It is a necessary respite. Yet the ear soon catches a downward chromatic drift in the bass—the sighing figures of the opening movement, returning like a persistent memory. Syncopations gently tug at the bar line. The tranquility never quite settles.
Here, the orchestral scale collapses inward. Mozart treats his ensemble as a chamber group, favoring intimate exchanges over massed sound. An oboe speaks; pizzicato strings nod in agreement. A clarinet threads its way through the thinning texture. This is the composer’s theatrical instinct distilled to its essence, turning instrumentalists into characters on a darkened stage. When the development slips into minor keys, the conversational intimacy only deepens the gloom, proving that the preceding anxieties were merely waiting in the wings.
Third Movement: Menuetto: Allegretto
By convention, the classical minuet demands courtly grace. Mozart offers a brawl. Hemiola immediately fractures the three-beat meter with aggressive two-beat cross-rhythms, forcing the ear to constantly recalibrate. Sforzando markings land heavily on the weakest beats. Any attempt to actually dance to this music would end in a twisted ankle. Beneath the rhythmic friction, the horns sustain unyielding pedal tones, exerting a harmonic pressure that leaves the polite ballroom dances of the era far behind.
So unsettled was Schubert by this severity that he copied the score by hand. Its shadow looms openly over the third movement of his own Fifth Symphony. Mozart does grant a brief, luminous reprieve in the G-major Trio, a passage of disarming simplicity. Yet the relief is strictly temporary. The da capo repeat arrives with grim inevitability, pulling the listener straight back into the machinery.
Fourth Movement: Finale: Allegro assai
An arpeggiated “rocket” theme surges upward through G minor to open the finale. The gesture borrows heavily from the Mannheim school, but where those earlier rockets climbed in major-key triumph, Mozart’s ascent is steeped in desperation. Then comes the development section. Here, Mozart pushes the era’s harmonic boundaries to the breaking point. He drives the thematic material through a relentless chromatic descent that touches all twelve semitones, effectively dissolving the tonal center. Long before Wagner’s Tristan or the dawn of serialism, the harmonic floor simply drops out.
By the time the recapitulation arrives, the structural tension has only hardened. There will be no comforting pivot to the major key in the coda. While other minor-key symphonies of the period routinely sought a bright resolution—the “per aspera ad astra” trajectory that Beethoven would later perfect in his Fifth—Mozart refuses the off-ramp. G minor persists right down to the final chord. The symphony closes without a shred of reconciliation.
Stripping the score down to its structural bones, Jeannette Sorrell and Apollo’s Fire deliver a period-instrument performance of fierce clarity. The gut strings produce a raw, dry tone. They bite into the phrasing. Natural horns lend an unstable, almost feral edge to the tuttis. If Herbert von Karajan gave us this music draped in heavy velvet, Sorrell exposes the terrifying velocity of Mozart’s architecture.
Legacy
Survival through the nineteenth century’s general indifference to Classical-era orchestral music came down to a simple case of mistaken identity: the Romantics recognized the Fortieth as one of their own. Schumann famously detected “Grecian lightness” in its G-minor turbulence. The paradox resolves only when you grasp his underlying point. The passion is real, yet the form containing it remains perfectly proportioned. Wagner, listening closer, heard in Mozart’s development sections the very “infinite melody” he would later theorize into existence.
By the twentieth century, recorded history had fractured the work into competing ideologies. Bruno Walter bathed the score in Viennese warmth. Herbert von Karajan marshaled its sheer orchestral mass. Decades later, Nikolaus Harnoncourt stripped the varnish entirely, applying period-performance grit to expose the underlying nerve. Yet Karl Böhm, conducting the Vienna Philharmonic, offered the most radical intervention: he simply played the ink on the page. Set beside Brahms’s Fourth Symphony and Beethoven’s Ninth, the Fortieth endures not as a museum piece, but as an open provocation.
Far earlier, Haydn offered a quieter homage. Deep within the final section of his 1801 oratorio The Seasons—a stark meditation on winter and death—a specific melodic contour emerges. Scholars have long identified it as a direct quotation from the Fortieth’s second movement. Mozart had been dead for ten years. To borrow a dead friend’s music to mourn him is a gesture almost too tender for the austere realm of musicological evidence. Like Mozart’s Requiem, left unfinished at his death, the symphony leaves us staring into a void that offers no easy consolation.
Follow the Score
Adam Fischer directs the Danish National Chamber Orchestra in the recording below. Tracking the notation in real time exposes a web of voice-leading that mere listening often obscures. Watch the development sections. Mozart fractures his motives here, hurling the splinters across the ensemble in tight, rapid-fire exchange.
For readers who prefer to turn their own pages, the complete score is hosted at IMSLP. → View the score on IMSLP
Frequently Asked Questions
How long is Mozart’s Symphony No. 40?
A standard performance runs between twenty-eight and thirty-three minutes. The variance depends entirely on tempo and the conductor’s fidelity to the repeat markings found in all four movements. Period-instrument ensembles typically race to the finish line in under half an hour. Conductors inclined toward a broader, heavier sound—Herbert von Karajan chief among them—often stretch the clock well past the thirty-three-minute mark.
When was Symphony No. 40 composed?
Mozart entered the score into his personal catalog on July 25, 1788. It sits at the center of a triptych dashed off in a mere six weeks. Symphony No. 39 in E-flat major arrived first, on June 26; No. 41 in C major, the “Jupiter,” followed on August 10. To this day, musicologists have identified no commission, patron, or specific occasion that prompted this sudden, massive output.
Why did Mozart write it in G minor?
For the composer, G minor served as a vessel for emotional extremity. He deployed the key sparingly but with ruthless consistency. You hear it in Symphony No. 25, the String Quintet K. 516, the Piano Quartet K. 478, and the Queen of the Night’s second, murderous aria in The Magic Flute. Of his forty-one symphonies, only two abandon the major mode. Both are in G minor. He wrote them fifteen years apart. Eighteenth-century theorists explicitly linked this tonality to grief, discontent, and thwarted ambition. The Fortieth embodies all three.
Did Mozart ever hear the symphony performed?
Historical records offer no proof of a premiere. After 1788, Mozart ceased mounting his own public subscription concerts in Vienna. Circumstantial clues point to Antonio Salieri conducting the work in 1791, though the evidence remains thin. Yet we know Mozart later revised the score, adding clarinets and recalibrating the oboe lines. A composer does not undertake the tedious labor of rewriting orchestral parts unless a performance is imminent.
What makes the Fortieth different from Symphonies No. 39 and No. 41?
Viewed together, the summer symphonies of 1788 form a cycle of starkly contrasting temperaments. Symphony No. 39 in E-flat major is festive, almost ceremonial. No. 41 in C major drives toward a finale of staggering contrapuntal density. Between them sits the Fortieth, a dark, isolated center. It is the only minor-key work of the three, and the only one stripped of trumpets and timpani. Where its siblings celebrate and conquer, this middle child grieves. By deliberately banishing the instruments of heroic rhetoric, Mozart ensures from the opening measure that no triumph will arrive.