The scene and rondo, “Ch’io mi scordi di te? … Non temer, amato bene,” K. 505, was written by Mozart in December 1786 for singer Nancy Stotrace’s Vienna farewell concert (February 23, 1787), prior to her return to London.
Mozart created the complementary piano part for his own performance, resulting in a unique sort of duo concertante, a melding of opera aria and piano concerto.
The text – possibly by Lorenzo Da Ponte – had already been used for an aria (K. 490) inserted into a private amateur performance of Idomeneo in 1786, and clearly Mozart found the words, in his new and superior musical setting, uniquely suited to the occasion of the Storace farewell concert.
Here is Miss Grimaud to plat this music for you: