's piano concerto
number 21 in C major
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.
Hedvig "Elvira" Madigan - Pia Degermark
Lieutenant Sparre - Thommy Berggren
cast/etc. from imdb.com