Demi Lovato And Joe Jonas Haven't Forgotten Their Disney Roots!!!

Demi Lovato and Joe Jonas went back in time performing "This Is Me" Tuesday night at the Washington D.C. concert stop on the Future Now tour.

The song is from the Disney Channel OG movie "Camp Rock," which launched both Demi and Joe's careers about 8 years ago. The two also dated for a split second afterwards.

Demi's touring with Joe's little bro, Nick, who handled the guitar riff, and it looks like the throwback went down unrehearsed.