Key figures: Wolfgang Amadeus Mozart, Leopold Mozart, Archbishop Hieronymus Colloredo, Countess Maria Antonia Lodron, Countess Antonie von Lützow
Summary
In 1776, Wolfgang Amadeus Mozart was twenty years old and resident in Salzburg as a court musician under Archbishop Hieronymus Colloredo, who had engaged him since 1772. The year represented one of the most prolific stretches of Mozart’s early career: he produced three piano concertos, at least two large serenades, multiple divertimentos, four masses, and several church sonatas within twelve months, all while chafing under the restrictions of court service. Colloredo imposed Enlightenment-inflected austerity on Salzburg’s musical culture, limiting the length and elaboration of sacred music; Mozart navigated these constraints while producing secular works of growing ambition.
The year’s output began with the Serenata notturna in D major, K. 239, composed in January 1776 — Leopold Mozart recorded the date on the original manuscript. Written for a concertante quartet of two violins, viola, and double bass set against a string orchestra and timpani, the work’s three movements (Marcia, Minuetto, Rondo) display the elegant, balanced writing that characterized Mozart’s Salzburg period. January also saw the completion of the Piano Concerto No. 6 in B-flat major, K. 238, composed for Mozart’s own use as soloist. February brought the Piano Concerto No. 7 in F major, K. 242, written for three keyboards at the request of Countess Maria Antonia Lodron and her two daughters; Mozart later arranged it for two pianos. In April he completed the Piano Concerto No. 8 in C major, K. 246, known as the “Lützow Concerto,” composed for Countess Antonie von Lützow. Later in the year Mozart composed the Serenade No. 7 in D major, K. 250, known as the “Haffner Serenade,” for the wedding of Elisabeth Haffner, and produced four masses in C major (K. 257, K. 258, K. 259, K. 262) alongside numerous church sonatas and divertimentos including K. 247, K. 252, and K. 288.
By 1776 Mozart was increasingly frustrated with his position in Salzburg. His father Leopold held the post of vice-kapellmeister and Wolfgang served as concertmaster, a role that offered little creative freedom or financial independence compared to the European courts the family had visited on their earlier tours. The tension with Colloredo that would eventually result in Mozart’s acrimonious dismissal from court service in 1781 was already present; the prolific 1776 output reflects both the demands of court patronage and Mozart’s personal drive to compose beyond those demands.
Significance
Mozart’s 1776 compositions represent a pivotal transitional year in which the composer’s Salzburg-period style reached its fullest expression before his eventual break with court employment and move toward the operatic and symphonic ambitions of his Vienna years. The three piano concertos of 1776 — K. 238, K. 242, and K. 246 — are recognized as among the most polished of his early concerto output, establishing formal templates (three-movement structure, the interplay between soloist and orchestra) that he would refine through the masterworks of the 1780s. The Serenata notturna K. 239 remains a staple of the chamber-orchestra repertoire, valued for its concertante texture and concise form. The year’s sacred music, produced under Colloredo’s length restrictions, demonstrates Mozart’s ability to compress complex liturgical settings without sacrificing musical quality. Together these works document a composer of exceptional facility operating at full productivity within — and increasingly against — the constraints of late-eighteenth-century court patronage.