3:25 Demi Lovato - Heart Attack (CHXBB Remix) 3:59 Demi Lovato - Heart Attack (Rock Version) (Lyric Video) 3:19 Heart Attack - Demi Lovato Tiktok version 5:17 Demi Lovato - Heart Attack (The Alias Club Remix) (Official Audio) 3:10 Demi Lovato - Heart Attack (The Alias Remix) (Matt Nevin Video Edit) 3:30 Demi Lovato - Heart Attack (Lyrics) 3:36 Demi Lovato - Heart Attack (Official Video) 2:51 Nightcore - Heart Attack (Switching Vocals) - (Lyrics) 3:31 Tukang Minjem Duit (Part 2) - Tekotok Series 2:54 Heart Attack (speed up) 2:02 Heart Attack X Hero 10:01 Demi Lovato • Megamix 2012 3:03 Nightcore - Heart Attack (Lyrics) (Demi Lovato) 3:40 The Chainsmokers - Don't Let Me Down (Illenium Remix) 4:44 Rihanna - We Found Love (French Candy Remix) 5:11 Demi Lovato - Heart Attack (Manhattan Clique Remix) (Official Audio) 3:25 Demi Lovato - Heart Attack [Matt Scuti remix] 5:44 Demi Lovato - Heart Attack (Yan Bruno 2013 Remix) 3:36 Demi Lovato - Heart Attack (Lyrics) 3:00 Demi Lovato - Heart Attack - (Speed up + Reverb) 4:40 Demi Lovato - Heart Attack (Deejay Theory Remix) (Official Audio) 3:40 Demi Lovato - Heart Attack (White Sea Acapella Remix) (Official Audio) 3:43 Demi Lovato - Heart Attack (White Sea Remix) (Official Audio) 3:29 \"Heart Attack\" - Demi Lovato (Sam Tsui & Against The Current) 3:29 Demi Lovato - Heart Attack (Lyrics) 3:54 \"Heart Attack\" - Demi Lovato (Sam Tsui & Chrissy Costanza of ATC)