The production of the music is unusual in that Grimault left it entirely in the hands of Wojciech Kilar – Grimault gave no instruction as to what music he desired, nor was there any back-and-forth, but simply shared the movie with Kilar, who studied it carefully, then went to Poland, recorded it, and returned with the completed score, which was accepted unchanged. The score was made available on a album of music from the original soundtrack, but no official sheet music exists. However, Simon Bozonnet, an amateur musician and fan of the film, released a faithful transcription of the piano theme on his website.