Little help please...

Spoon, Led Zeppelin, Seal, Black Flag, Rolling Stones, White Zombie, Alice in Chains, Cypress Hill, Dead Kennedys, Smashing Pumpkins, Eagles, Cars, Lemonheads, B52s, Garbage, Bee Gees, Matchbox 20, Great White, White Snake, Eels, Gorillaz, Pixies, Madonna, Twisted Sister (?), Scissor Sisters, Guns 'n Roses, Beach Boys, Police, Cowboy Junkies, U2, Nine Inch Nails, the Cult, Black Crowes, Ratt, Blur, Hole, Dinosaur Jr, Blind Melon, Sex Pistols, Red Hot Chili Peppers, Radiohead, Rusted Root, Iron Maiden, Queen, Prince, Fifty Cent.. Please fill me in on any others I missed. Are the guys in suits supposed to be the Blues Brothers? It doesn't seem to fit... Clicking on the photo should open a new window with a larger version of the pic.

A friend sent me the jpeg; so, I don't know if this part of a contest or just an ad for Virgin Records.