- Köchel Number
- K9 644 | K6
- Genre
- Opera & Stage Music
- Form
- Arias, Scenes, Ensembles & Choirs
- Date
- July 1768
- Place
- Vienna
- Age
- 12
Arias (lost), K. 644 refers to a small, now-vanished group of stage arias said to date from Vienna in 1768, when Wolfgang Amadeus Mozart was twelve. The entry survives chiefly as a catalogued trace, and its attribution is commonly treated as doubtful.
Mozart's Life at the Time
In 1768 Mozart was in Vienna with his family, a precocious twelve-year-old moving in an operatic city where Italian style dominated fashionable theatre and court music-making [1]. K. 644 is traditionally placed in this Viennese period and described simply as lost Arien—material that may have been written for a specific occasion or singer, and later dispersed or discarded [2]. Because no score survives, and because the entry itself offers no secure musical fingerprint, the work is often regarded as of doubtful authenticity (or at least doubtful transmission) rather than a firmly established Mozart item [3].
Musical Character
No notated music is extant for Arias (lost), K. 644, and the surviving documentation does not preserve even an incipit, key, scoring, or text underlay [2]. For that reason, the musical character cannot be described responsibly beyond general probability: if the attribution is genuine, the arias likely belonged to the Italianate vocal idiom Mozart was absorbing at the time—clear periodic melody, singer-friendly figuration, and straightforward harmonic rhythm, the sort of craft he was already practicing in his childhood arias [1]. In developmental terms, K. 644 is best understood as a shadowy signpost within that early apprenticeship in stage writing, rather than a work we can evaluate as music.
Sources
[1] International Mozarteum Foundation (Köchel Verzeichnis): background note on Mozart’s early aria production (including Vienna 1767–68) on the KV page for a related aria sketch.
[2] Stanley Sadie (ed.) / Cliff Eisen biography PDF (King’s Research Portal): notes on Mozart’s activity in Vienna in 1768 and mentions that several arias from that period are apparently lost.
[3] Deutsche Grammophon: “Mozart 225 – Doubtful Authenticity” (context for the category of doubtful/spurious Mozart attributions).