Possible Clues:

• *One who's 'Hoppin' and a-boppin' and a-singin' his song,' in a 1958 hit
• 1958 hit No. 2
• One with a lot of tweets?
• Batman's sidekick on guitar?
• 1972 Michael Jackson hit
• Big hit for Bobby Day, back in the day
• Michael Jackson song
• Top-10 tune of '58
• Doo-wop hit