Watching a strange movie called Don't Play Us Cheap, a musical written and filmed by Melvin Van Peebles back in 1972. It's a film version of his stage show with Esther Rolle, Mabel King and Avon Long and the music is wonderful, but it's all a little too special.
The plot has to do with two servants of Satan who drop in on a Harlem party one Saturday night. The younger one falls for a sweet young thing, and the party goes on. Singing, dancing, etc. I think the whole thing was filmed live, none of the singing seems to be synced.