It's the ultimate boy band faceoff! Will (Matthew Morrison) is incredibly angry at Finn (Cory Monteith) for macking on his lady, but before their fight eventually gets physical, the two men first attempt to solve their differences in song. By singing a mashup of two popular boy band songs... obviously. Will sings ‘N Sync’s “Bye Bye Bye” in GleeSeason 4, Episode 16: “Feud,” while Finn takes on Backstreet Boys’ “I Want It That Way." Which one do you think wins?