My CD collection and iTunes application boast many a movie soundtrack. My husband and I have long loved cinematic scores of all sorts.

Which is why SCORE: A FILM MUSIC DOCUMENTARY was a must-see for us both from the very moment I saw it listed on the schedule for the 39th Denver Film Festival, which I have the privilege of covering this year.

SCORE, directed by Matt Schrader, is a joyous examination of the work and dedication of those who masterfully match music to movies. Composers, film historians, and...