The two ended up doing everything they could to establish their domain. As Mendes was finishing up "Wonderwall," Corden appeared with a grand piano to sing "Great Balls of Fire," but before he could finish the song, Mendes left and returned as "DJ Stitches." Dressed in a hoodie and sunglasses, DJ Stitches, his massive DJ booth and accompanying disco ball did everything they could to get the crowd hyped. Unfortunately, the cranky subway patrons weren't having it.
Corden raised the bar one more time, leaving and returning with four life-sized Backstreet Boys dolls to sing "Everybody," but it was game over when Mendes was lowered from the sky dressed as an angel to sing his own hit, "There's Nothing Holdin' Me Back."