Joe Jonas and his new band DNCE turned a dance marathon for kids fighting cancer into an actual concert, and now we’re even more in love with the former Jonas Brothers member than ever before.

The annual marathon at Penn State, requiring members not to sleep or sit for 46 hours straight is pretty intense, but the event raises millions of dollars for cancer research, so what’s a little Charlie Horse for a good cause?

This year, however, DNCE surprised the kids with their performance and their reaction was priceless.

Check it out!

Miren que hermosa sopresa le dieron a nos nenes! Aqui video en HD @DNCE #teamDNCE #DNCE #JOEJONAS pic.twitter.com/Rwkn2Cjk55

— PlobnrgNews 🎤 (@PlobnrgNews) February 18, 2017

omg this is happening #DNCE #THON2017 pic.twitter.com/DJ3gdulqHi

— Carl (@CarloiSmith3) February 18, 2017

Thanks to #DNCE for helping us kick off THON 2017 right!!! #46herewecome !! pic.twitter.com/HWkZbb3i8c

— Penn State Berks (@PennStateBerks) February 18, 2017