Oper mozart fragment blieb

Gibt es eine Oper von Mozart, die nur Fragment blieb?

Ja, Zaide blieb nur Fragment. Später wurde aus der Grundhandlung durch J.G. Stephanie und Mozart die Handlung für das Singspiel Die Entführung aus dem Serail, die im Gegensatz zu Zaide auch ein gutes Ende nimmt.

Ebenso begonnen, aber nie vollendet blieb L´ oca del Cairo.

„Lo sposo deluso“
EIn Fragment aus dem Jahr 1783
Mozart: Lo sposo deluso K. 430
Complement of the Opera fragment by Franz Beyer
Mozart’s master fragment – available for the first time
“And this is why I should be so sorry if I had written this music for nothing,” wrote Mozart to his father in 1783 about the Pulcherio aria “Dove mai trovar quel ciglio?” from the fragment “Lo sposo deluso.”
Mozart would no doubt have been pleased with Franz Beyer’s orchestrations of the fragmentary pieces. Beyer applies his stylistic expertise to the torso as the composer had left it.
Departing from the vocal part, the bass line, several string figures and notes on the instrumentation for “Dove mai trovar quel ciglio?,” Beyer whips up an atmospheric and wonderfully varied tenor aria.
The „completed“ five-part fragment “Lo sposo deluso” was performed for the first time in Zürich on 5 March 2006 during the Mozart Anniversary Year.
http://www.breitkopf.com/feature/werk/4022