Taking Back Sunday performing live with help from Thursday, Every Time I Die and Four Year Strong band-members.

Taking Back Sunday's John Nolan left Warped Tour early to head home for the birth of his baby, so members of Thursday [Geoff Rickly], Every Time I Die [Keith Buckley] and Four Year Strong [Dan O'Connor], helped out with backing-vocals at the Milwaukee date.

Watch live videos from the Milwaukee set below...