Forrás: Heart Attack Sheet Music by Demi Lovato. Dan Coates. Demi Lovato. BMG Rights Management. Easy Piano. Vocal. Chords. Solero.
Fordítás: Heart Attack Kotta Demi Lovato. Mitch Allan , Sean Douglas , Jason Evigan , Nikki Williams , Mitch Scherr , Demitria Lovato.