the nickname of Mozart's piano concerto number 21 in C major (K. 467).

recieved after the piece was used in the 1967 film, "Elvira Madigan" .. which is a romantic movie, written by Noelle Gilmour, Bo Wilderberg, et. al. and directed by Bo Wilderberg, that I have not seen.

cast:

Hedvig "Elvira" Madigan - Pia Degermark
Lieutenant Sparre - Thommy Berggren
et. al.

cast/etc. from imdb.com