There’s no argument that the voices behind The Simpsons’ main characters are creative geniuses. Hearing Harry Shearer’s Mr. Burns or Hank Azaria’s Apu Nahasapeemapetilon is as comforting to a Simpsons fan as a cold can of Duff beer is to Homer. But with over 650 guest stars in the show’s 27-season run, only a die-hard Simpsons fan can match a celeb’s voice to the character. Or can they? Take EW’s quiz below to find out!