In the trackID.gxt2 file, you can find songs that were supposed to play on the radio, but were removed during the development of the game:
Bad Religion - We're Only Gonna Die Circle Jerks - Dude The Alley Cats - Nothing Means Nothing Anymore The Descendents - Ride The Wild The Germs - Manimal The Gun Club - Sex Beat
Songs found in an early build of the game on dev. PlayStation 3:
7 Seconds - 99 Red Balloons Agent Orange - Bloodstains The Dickies - Give It Back The Dickies Fear - Let's Have A War Frenzal Rhomb - You Are Not My Friend The Last - She Don't Know Why I'm Here Middle Class - Out Of Vogue Redd Kross - I Hate My School Screamers - Vertigo The Weirdos - Solitary Confinement