“This is a song I wrote, by the way. I just want to point that out to everyone. “Feel the Heat” was written by me. I wrote this. No, I can’t sing it. Mark Wahlberg is the only one that can sing it; I would never desecrate this beautiful, rocking song called “Feel the Heat” by trying to sing it. And John Reilly wrote the music, and boy I’m proud of it. Well, I’m sure the suspicion is that Mark really can’t sing, but the truth is I’m not going to give away whether this is really good acting or really bad singing because that’s part of the wonderful mystery that is Dirk Diggler.” - Paul Thomas Anderson, Boogie Nights DVD commentary.