Rush out and search for the Foreign language film, "The Chorus." I don't care that you hate subtitles. It will be hard to find. They will only have one copy. Chorus changes people. Singing in a group is a lifechanging process. Notice that music is not supported by the administration. It empowers the director and administrators don't like teachers with power. In the end the musician seems to lose, but in the life long view, he wins.

"Les choristes" or "The Chorus"