@mjarbo I think the difference is the people behind backrooms and obsession come from people that make stuff. They tell stories. Chris is a film critic. He talks about movies.
Tom Cruise did his own singing in Rock of Ages. He trained for about six months.
The director said:
“I was like a 15-year-old girl, I was screaming and jumping up and down. He was singing literally four or five hours per day. He wouldn’t stop.”