Demi Lovato Crushed an A Cappella Cover of Paramore's 'Misery Business': Watch

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Demi Lovato performs during the 16th International Mawazine Music Festival at Olm Souissi stage in Rabat, Morocco on May 20, 2017.  

No power? No problem. Demi Lovato showed her Hot Topic roots on Tuesday night during a guest DJ spot at Emo Nite L.A. when she kept the party rolling during some sound issues by leading the crowd in a fierce a cappella version of Paramore's "Misery Business." 

"Ready, we're going to sing it again. Technical difficulties," she told the audience crushed in around her, which included Post Malone and Sirah. "We're going to f--king rock this s--t." 

Check it out: