Demi Lovato dropped into the Capital FM studio for an exclusive, stripped-down live performance of 'Heart Attack'. Watch the official video here: http://youtu.be/AByfaYcOm4A

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Watch the whole session: http://bit.ly/DemiLovatoCapitalFM

See Demi perform 'Give Me Love': http://bit.ly/DemiGiveMeLove
See Demi perform 'Neon Lights': http://bit.ly/DemiNeonLights
See Demi perform 'Give Your Heart A Break': http://bit.ly/DemiHeartBreak

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