Read an old science fiction story, can’t remember title or author. At least 40 years ago.
A man helps an alien repair and launch his spaceship. Finds he is on one-way trip to alien world. This world is utopia, but he has no place in it. He recites some poetry and song lyrics, and the aliens are fascinated, thinking he is a genius artist. Artists are highly respected but those who perform others' works are not. It's a crime to claim others' work. Story ends, I believe, with him getting caught.
Does anyone recognize this?