THON 2017 reached final four-level energy only two hours after dancers stood up Friday night when Joe Jonas and his band DNCE shocked the crowd and graced the stage with a surprise performance that will long go down in THON history.

If you weren’t in the Bryce Jordan Center yet — I mean, how could you have known a JoBro would be singing? — we put together a video of DNCE’s performance. If you want an idea just how excited the BJC was, check out our live stream from when Jonas and DNCE took the stage.