Demi Lovato [1]'s voice is so great that she doesn't need music to belt out a tune [2]. The singer was playing a DJ set at Emo Nite in Los Angeles when the sound went out. Instead of panicking, Demi showed off how chill she is, grabbing the microphone to sing Paramore's "Misery Business" a capella.

In a video of Demi taken by a fan, the "No Promises" singer tells the crowd to start singing with her, but even over everyone's chants, you can hear her powerful vocals [3] loud and clear. It's actually spectacular. "We are going to f*cking rock this sh*t," she stops to tell the audience and continues singing. Watch it all in the video above.