Just to add that I'm a total snob when it comes to music, so I know my views tend to be a bit extreme.
Vince Gironda never allowed any music played in his gyms. He said it affected concentration, and that a gym should be 'quiet, like a temple or a church.' Yeah.
230 strict press @ 220; bodyweight+187 X 4 dips @ 180; 403 front squat @ 210; 10 000 push-ups.
Ignoring irrelevant credentials since I was 17.