Camp Rock originally premiered on Disney Channel in 2008 and followed Mitchie Torres (Demi Lovato), an aspiring singer attending a summer music camp, where she crosses paths with a pop star named Shane Gray (Joe Jonas). The sequel, Camp Rock 2: The Final Jam, followed in 2010.

Lovato and the Jonas brothers performed renditions of “This is Me” and “Wouldn’t Change a Thing”, both of which featured in the 2008 Disney Channel film Camp Rock, which saw Joe and Lovato – who had a real-life, albeit short-lived, romance in 2010 – play love interests on screen.

The band — consisting of brothers Joe, Nick and Kevin Jonas — kicked off their 20th anniversary tour on Sunday at MetLife Stadium in their home state of New Jersey. But to make it more special, they surprised their fans with some special guests throughout the show, including Demi Lovato .