75 Bands

Click this link, there are 75 bands referenced in the image. See how many you can find, then see what I've found.

I found 20 so far: Queen, Sex Pistols (haha, it's funny), Guns 'n Roses, Matchbox 20, Smashing Pumpkins, Prince, Led Zepelin, The B-52s, The Eagles, Alice in Chains, 50 Cent, The Postalservice, Rob Zombie, Madonna, Cypres Hill(?), The Monkeys, Nine Inch Nails, Rolling Stones, Garbage (?), Beach Boys

Update: The Police, Radiohead, Red Hot Chili Peppers, U2, The White Stripes.