Quote from: Revilod on Yesterday at 17:49The music from the Swedish film is an arrangement of the slow movement of Mozart's Sinfonia Concertante for oboe, clarinet, horn, bassoon and orchestra, K. 297b.
Perfect, thank you so much! This is a piece I've honestly never listened to, so thank you for clarifying that!
Also, in the "arrangements" section on the IMSLP page for this Sinfonia Concertante, there is a score with an arrangement for 4 instruments and piano, with those 4 instruments being written either as woodwinds or strings (including the possible arrangement for clarinet and strings), and the piano matches the the recording from the movie. Even the timeline of the arrangement seems to line-up with the film's setting, so that was excellent research on their part. This is 100% it, thanks so much for solving this conundrum!