The new college a cappella movie, "Pitch Perfect," is already a bonafide hit in limited release, having achieved the highest per-screen gross at the box office last weekend. But does this mean music-free singing will suddenly be the cool thing on campuses across the nation? Maybe not, but perhaps it could be a hot trend on the big screen, if Hollywood decides to produce some a ca-copycats.
Well, the studio execs needn't only look to the Anna Kendrick-led musical for inspiration. Below we've highlighted 15 earlier a cappella performances from the movies -- a surprising amount of which star Will Ferrell. VIDEO: