You want variety:
ABBA, Beatles, Chicago, Doors, Eagles, Foreigner, Garbage, Heart, Iron Butterfly, Janis Joplin, Kraftwerk, Led Zeppelin, Meatloaf, Nazareth, Ozark Mountain Daredevils, Pink Floyd, Queen, Runaways, Sex Pistols, Ted Mulry Gang, Uriah Heep, Velvet Underground, Stevie Wonder, XTC, Yellow Dog, Frank Zappa.
Try and get more diverse than that.