Always stuck between rock and pop and R&B, they're one of the most successful duos of all time. Despite eligibility all the way back in 1997 and a bevy of indelible No. 1s throughout the '80s, this is Hall & Oates' first time on the ballot. Guess their comeback in recent years worked.
(Photo credit: Rock and Roll Hall of Fame and Museum)(Photo credit: Rock and Roll Hall of Fame and Museum)