One Trick Pony stars Paul Simon (who also wrote the film) as a musician with one hit song behind him (thus the title) and his struggles as a working musician coping with a divorce, his life on the road, and trying to get another hit record (with Lou Reed as his producer). A huge majority of the movie is taken up with Paul Simon and his band either performing on stage or with Simon driving or walking somewhere while one of his songs plays in the background.
If you like Paul Simon, you're really going to enjoy this movie, if you don't like Simon, you'll find One Trick Pony excruciating. However, since I neither like nor dislike Simon, I'm sort of middle of the road on this one. Everyone's acting was okay, even Paul Simon's. The story, what there was of it, was okay; and Simon's music was okay. And that pretty much sums up the whole movie for me, it was just okay. If you do decide to watch One Trick Pony, be on the lookout for two odd appearances: Daniel Stern as a Hare Krishna and Mare Winningham in a nude scene.