A Taste for Divertimento

In the mid-1780s, the twilight hours of Vienna often resounded with the elegant sociability of Mozart's chamber music. One can easily imagine Wolfgang Amadeus Mozart – recently established in Vienna, enjoying the vibrant musical life of the city – gathering with a few good friends in a candlelit room. It was in such an intimate setting that Mozart's Divertimenti K. 439b probably originated not as grand public commissions, but as private pleasure. These five Divertimenti, consisting of a total of twenty-five miniature movements, were originally composed for three basset horns – an unusual ensemble of alto clarinets whose warm tone Mozart had come to love – during a period of intense creativity, around 1783. The first publication dates from 1803 and was published by Breitkopf & Härtel under the title Petites pieces pour deux Cors de Bassette et Bassoon and contains only movements from the second Divertimento. In the following years, various editions appeared with different instrumentation: two violins and a cello; fortepiano; two clarinets and bassoon. Mozart's fascination with the basset horn had begun only a few years earlier, when he first heard its dark voice in his magnificent Serenade K. 361 and shortly thereafter in the solemn tones of his Maurerische Trauermusik K. 477 – Masonic funeral music. The distinctive character of the basset horn – alternating between softly melancholic and eerily sonorous – was associated with Masonic rituals, a connection that Mozart, who joined the Freemasons in 1784, did not miss. Yet that same instrument in these Divertimenti loses its funereal weight and speaks in clear, measured tones, perfectly suited for an evening of refined amusement. Mozart's decision to write for three equal wind voices was both practical and inspired. The Stadler brothers (Anton and Johann), virtuosos on clarinet and basset horn, were part of Mozart's circle at that time; their presence undoubtedly sparked the composer's interest. Mozart, ever an experimenter, was reportedly open to adjusting the instrumentation during these informal sessions. Ultimately, he chose the sonorous blend of three basset horns, which in their united sound found a unique warmth and intimacy. From Mozart's pen flowed music that, though scaled for a couple of friends rather than a full orchestra, lost nothing of the craftsmanship and charm of his larger works. The word divertimento implies entertainment, but in Mozart's hands, such music transcends the idea of background amusement. These are no careless trifles, but excellently balanced pieces that transform modest occasions into art. The genre had its origins in serenades and cassations, written to accompany outdoor festivities or noble gatherings, but Mozart brought his own imagination to it. Each of the five Divertimenti follows a five-part plan, usually beginning with a lively Allegro, followed by minuets, lyrical slow movements, and ending with a sparkling finale. This sequence offers contrast, variety, and balance—as if Mozart were composing a musical feast, where each course in turn refreshes the palate. What could have been fleeting music becomes, through his genius, something enduring and endlessly worthwhile. The first movement of the set opens with an Allegro that seems to embody daylight itself, a cheerful and gracious theme introduced with natural ease. The three instruments converse with each other like table companions, exchange phrases, imitate one another, and weave harmonies that are transparent yet full. The ensuing minuet breathes refinement, its measured rhythm recalling the steps of dancers moving through candlelit halls. At the center stands an Adagio, tender and unhurried, where the melody sings with the simplicity of an aria. Another minuet restores the festive tone before the work ends with a rondo whose recurring theme evokes both familiarity and surprise. This balance of dance, song, and play is the template that Mozart adapts and enriches throughout the series. The second Divertimento mirrors the structure of the first, but here Mozart deepens the lyrical character. The opening Allegro seems to burst forth with confidence, but the slow movement is more inward-looking, with a hint of melancholy in its lines as if Mozart, amidst public sociability, paused for quiet reflection. The minuets are elegantly proportioned, the trios contrasting with excursions into distant keys. The concluding Rondo is swift and light, full of rhythmic humor that Mozart so enjoyed, phrases that stop abruptly or veer unexpectedly, bringing a smile to the listener's face. There is a certain grace in the proportions of this work that reminds us how instinctively Mozart balanced variation and coherence. The third movement of the set perhaps contains the most dazzling finale, an Allegro assai whose rondo theme emerges with irresistible verve. Preceding it is a finely wrought Adagio that, though brief, is infused with warmth, its melody unfolding with vocal grace. Mozart was always a writer for the stage, and even here, in a work for a small wind ensemble, he writes as if for characters on a stage: voices interact, complement one another, challenge and reconcile. The structure is simple, but the interplay creates a sense of dialogue and narrative. In these movements you hear an echo of Mozart's operatic instinct, for he cannot help but give each line its own character. With the fourth Divertimento, Mozart begins to reshape the pattern. After an opening allegro, he introduces a serene and radiant Larghetto whose song-like line is supported by delicate harmony. Only then does a minuet follow, which leads to another slow movement, this time an Adagio with a particularly moving character. By doubling the number of slow movements and limiting the number of dances, Mozart creates a different balance, one that invites the listener to deeper contemplation. The finale, marked Allegretto, brings back a smile, tender rather than exuberant, like a conversation winding down at the end of an evening, gracious and unforced. The entire Divertimento feels more introspective, as if Mozart wanted to prove that even a genre intended for lighthearted amusement can accommodate moments of deep intimacy. The final Divertimento of the set deviates most boldly from convention. Instead of the expected lively opening, it begins with an Adagio, solemn yet tender, that creates an enchanting stillness before dancing commences. Here Mozart turns the genre on its head, beginning not with festivity, but with reflection. The ensuing minuet restores movement, but again the emphasis lies in the slow movements. A second Adagio and a Romance, marked Andante, whose very title suggests intimacy and lyrical warmth. The conclusion is a Polonaise, a dance with stately character and subtle exoticism, that crowns the series with a gesture both dignified and fresh. The succession of movements in this fifth Divertimento demonstrates Mozart's instinct for variation and inventiveness, never content to repeat a formula, but always shaping the material to offer something new. The presence of a Romance and a Polonaise reminds us of Mozart's openness to influences from both popular and courtly traditions, blending cosmopolitan elegance with genuine song. Mozart's ability to give such modest works depth is all the more remarkable when we consider that these pieces were composed during a period of intense creative output. In those same years, he wrote concertos that transformed the genre and operas that would define his legacy. Yet in these smaller forms, he found another outlet for his imagination, allowing him to explore the expressive possibilities of instrumental color and the art of creating movements that, though brief, feel complete. They reveal his ability to shift seamlessly between public grandeur and personal charm, to write music that could both entertain and move. Where his concertos astonished the public with their brilliance and his operas enchanted with drama, these divertimenti whisper another truth: that the greatest artistry can also appear in miniature. Though written for simple occasions, these divertimenti carry within them the broader cultural world of Mozart's Vienna. This was the era of Enlightenment in music, when art aspired both to delight and to elevate. We hear in K.439b the ethos of Mozart's time: the conviction that beauty and simplicity need not be trivial, and that pleasure and artistry can go hand in hand. The contemporary Viennese society loved such melodious, skillfully crafted pieces – they formed the musical backdrop to daily life for the well-to-do. One can imagine these Divertimenti being performed on the summer estate of an aristocratic family, the soft sound of basset horns wafting through open doors into an evening garden. The cultural crosscurrents of refined classicism and learned taste meet in these works: while they are easily appreciated by any ordinary listener for their melody and charm, they also contain subtle references to Mozart's erudition. A touch of counterpoint in an inner voice, a hint of Baroque-like sequence in a development, or a miniature fanfare – such elements would quietly please the connoisseurs without disturbing the ingenious surface of the piece. Mozart was a master at weaving sophistication into apparent simplicity.