Demi Lovato sang the national anthem at the Mayweather fight last night, but you could argue that her VMAs performance is more momentous that that one-sided non-starter of a fight. She performed her recent single "Sorry Not Sorry," a song with some pretty sweet gospel chords. Fittingly, there was a choir and a virtuosic rhythm section backing her, and she frankly sang the shit out of this tune. Watch the performance below.
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