Just picked up the soundtrack CD. The movie was entertaining and sounded great. I really liked the music, especially these two tracks:
Rollin' Crumblin - Tom Rothrock (this should be a new “stadium anthem”)
Destino de Abril - Green Car Motel (haunting combo of several music styles)
I was unable to find other music from these artists. My guess is they are LA studio musicians.
Worth checking out. Previews of the soundtrack on Amazon will give you a taste if you haven’t seen the movie.