Demi Lovato performs "Heart Attack" to just 300 lucky fans at the Porchester Hall for her very special VEVO Presents: Live In London show. Download DEMI feat. the new single "Made in the USA" and "Heart Attack" on iTunes - http://smarturl.it/dlitunesa1
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"Heart Attack" is a song by recorded by American singer Demi Lovato for her fourth studio album...