I remember a story with a male opera singer who had promise but never managed to fulfill his potential, he hung in and did minor roles. He found an injured cat(?) that turned out to be an alien. He had to do surgery to keep it alive(directed by the alien). In payment the alien corrected his technique and he became GOOD. A top female singer wanted to do an opera with him and they trained together. I remember something about a rescue beacon for the alien, and I think there were government agents trying to find the alien.
There are other bits an pieces but nothing I am sure of. No opera names come to mind although at least two were mentioned. I believe it is at least 8 years od but I am not sure.
Thanks, limab