“Mentre ti lascio, o figlia” (K. 513): Mozart’s E♭-major concert aria for bass
by Wolfgang Amadeus Mozart
Mozart’s concert aria Mentre ti lascio, o figlia (K. 513) is a compact yet dramatically charged scena for bass and orchestra, composed in Vienna on 23 March 1787.[1] Written at the height of his mature operatic style, it distills the emotional rhetoric of opera seria into a standalone piece that rewards attention for its through-composed design, its eloquent orchestral coloring, and its unusually demanding vocal writing for a low voice.[2]
Background and Context
Composed in Vienna in 1787—Mozart’s thirty-first year—the bass aria Mentre ti lascio, o figlia (E♭ major, K. 513) belongs to the rich stratum of independent Italian concert arias that sit alongside (and sometimes between) the great stage works.[1] The date is unusually precise: 23 March 1787.[3] In other words, it comes from the same creative period in which Mozart was thinking in intensely theatrical terms—an important clue to why this “standalone” number can feel like a complete operatic scene in miniature.
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The work is associated with Gottfried (Gottfrid) von Jacquin, a member of Mozart’s Viennese circle; modern scholarship frequently repeats that Mozart composed K. 513 for him.[2] Whether or not Jacquin was the first performer, the aria’s profile is telling: Mozart treats the bass not merely as a comic father or blustering authority (as in much opera buffa convention), but as a vehicle for grave, affectionate intensity—an expressive stance that anticipates the deeper psychological bass writing of his late 1780s operas.
Text and Composition
Mozart did not commission a new poem for K. 513; instead, he borrowed an existing operatic text. The words are taken from the libretto by Duè (or Due) Sant’Angiolo-Morbilli for Giovanni Paisiello’s opera La disfatta di Dario.[2][4] In typical opera seria fashion, the situation is one of heightened private emotion made public through song: a father’s painful leave-taking from his daughter (the title’s “While I leave you, O daughter”).
Musically, Mozart’s scoring already signals a concert-aria ambition rather than a bare continuo accompaniment. The extant sources and modern cataloging describe an orchestra of flute, 2 oboes, 2 clarinets, 2 bassoons, 2 horns, and strings.[5] The presence of clarinets—still a relatively “modern” color in 1787—matters: in E♭ major they can add both warmth and a mellow sheen, aligning the aria’s tenderness with the sound world Mozart cultivated in Vienna.
Musical Character
K. 513 is often described as through-composed: instead of a neat da capo design, Mozart shapes the aria as a continuously unfolding dramatic arc in three connected tempo regions (Larghetto – Allegro – Più allegro).[2] That structure is more than a formal curiosity; it is a theatrical strategy. The opening Larghetto allows for dignified, intimate address (orchestral introduction first, then the voice), while the later faster sections translate feeling into motion—an escalation that resembles an operatic scene’s shift from reflection to decision.
What makes the aria distinctive within Mozart’s bass output is precisely this blend of pathos and technique. The bass line is not merely “low”: it is agile and rhetorically detailed, demanding sustained legato alongside brisk figurations in the concluding acceleration.[2] Mozart thus writes for a bass who can persuade as an actor and impress as a virtuoso—an ideal that places K. 513 close to his finest independent stage pieces for low voice.
For listeners who know Mozart mainly through his operas, Mentre ti lascio, o figlia deserves attention as a concentrated sample of his mature dramatic craft: a self-contained farewell scene whose orchestral palette, flexible form, and emotionally alert vocal writing show how operatic thinking could flourish even outside a full-scale theatre work.[1]
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[1] Internationale Stiftung Mozarteum (KV catalogue entry for K. 513; work title, genre, and basic catalog data).
[2] R. M. Smith, “The Concert Arias of Mozart” (PDF; discussion of K. 513: date/place, intended singer, form/sections, scoring, and vocal character).
[3] Wikipedia: Köchel catalogue (table entry giving date 23 March 1787, age 31, and Vienna for K. 513).
[4] Parlance Chamber Concerts program note (text source from Sant’Angiolo-Morbilli for Paisiello’s *La disfatta di Dario*; contextual description).
[5] IMSLP work page for K. 513 (instrumentation list, key, and general information).