After internet rumblings and an eventual sighting, Joe Jonas and his band, DNCE, took the stage at THON to give the BJC an unannounced concert, and they did not disappoint.

The five-song set started off THON right just two hours into the event. Framed as a “special surprise” during a lip-sync battle, the band came into the BJC with a clip of their hit “Cake By The Ocean,” bringing the Jordan Center to a level of energy not usually reached until the final four.

“We’re doing this for the kids, am I right?” Jonas asked the crowd after the band’s second song, Pay My Rent. He was greeted by a packed BJC screaming right back at him. Jonas quickly transitioned into a We Are chant before moving into the band’s third song, Body Moves.

After performing the smooth single “Toothbrush,” DNCE launched into a medley of covers. The band started with the Spice Girls’ “Wannabe,” eventuaully getting to a clip of Brittney Spears’ “Oops I did It Again,” and Kanye West’s “Fade,” all leading to a full performance of “Cake By The Ocean” sending the arena into a frenzy. As the rest of the band jammed out to an extended solo, Jonas walked out to the crowd, giving high fives and jumping on a table on the floor, finally running around the floor of the BJC before exiting, appropriately, to “We Are The Champions” by Queen.

For an event whose musical headliners usually consist of local cover bands, the show was an extraordinary surprise, and the crowd reacted accordingly. From the minute that the band was introduced, to the second that they left the stage, THON was just about as loud as it could be.