Music to “Semiramis” (K. 315e)
par Wolfgang Amadeus Mozart
Mozart’s Semiramis (K. 315e) is a lost, uncompleted stage work—described in contemporary sources as a “duodrama”—begun in Mannheim in late 1778. Though only fragmentary evidence survives, it offers a telling glimpse of the 22-year-old composer testing a new kind of dramatic, speech-driven musical writing.
Background and Context
In Mannheim in 1778, Wolfgang Amadeus Mozart (1756–1791) moved in circles where theatrical experiment and literary ambition mattered as much as virtuoso playing. On 3 December 1778 he wrote to his father Leopold that, “for the sake of myself and Herr von Gemmingen,” he was drafting “the first act of the opera in declamatory style,” adding that “the duodrama is called Semiramis.”[2]
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The “poet” Mozart names is Otto Heinrich von Gemmingen-Hornberg (1755–1836), a Mannheim man of letters.[2] The project belongs to Mozart’s wider Mannheim period—an intensely formative moment in which he absorbed the orchestra’s famed wind color and the city’s taste for expressive, rhetorically pointed dramatic music. The Köchel-Verzeichnis lists the work as authentic but “lost,” and dates it to Mannheim, November 1778.[1]
What Survives
No usable musical text is transmitted: the work is catalogued as a fragment and “Transmission: lost,” with only a general indication of orchestra as instrumentation.[1] Consequently, the most concrete “on the page” evidence is Mozart’s own description of his method—“declamatory style”—which strongly suggests an approach close to melodrama (spoken text shaped by music) or heightened recitative-like delivery rather than closed-number opera.[2]
Scholarly Context
Mozart’s letter implies that at least a first-act draft existed and that he intended to “take it with me and then fill it out at home”—a plan that, as the letter’s annotation notes, was never realized.[2] The result is a work that sits less among Mozart’s finished operas than among his occasional dramatic efforts: a small-scale Mannheim experiment in text declamation and theatrical pacing, undertaken just as he was sharpening the dramatic instincts that would soon surface with far greater documentary clarity in his mature stage works.
[1] Köchel-Verzeichnis (Mozarteum): KV 315e “Semiramis” — status, dating, and transmission.
[2] Mozart to Leopold Mozart, Mannheim, 3 December 1778 — mentions “Semiramis,” “duodrama,” and “declamatory style.”