Jon Bon Jovi returned to the stage at New York's Madison Square Garden on Sunday, just days after cutting a show short due to voice trouble that a spokesperson attributed to a sinus infection. His comeback proved memorable, as he brought out fellow New Jersey rocker Bruce Springsteen for a surprise two-song encore, delighting a crowd that had been anxious about the singer's health.

Rather than closing with the expected "Bad Medicine", Bon Jovi introduced Springsteen as "the king of the great state of New Jersey" for the 17-date MSG run's most talked-about moment. The pair performed "Who Says You Can't Go Home" and "The Promised Land", with fan-shot footage quickly spreading on social media alongside praise for the impromptu collaboration. The set otherwise featured Bon Jovi staples including "It's My Life" and "Livin' on a Prayer".