Some awesome Internet user has mashed up Taylor Swift and Demi Lovato. The result? "I Knew You Had a Heart Attack."

Rating: 4.3 / 5.0 (32 Votes)

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    <div style="text-align:center;"><iframe id="viddler-66183713" src="//" width="741" height="429" frameborder="0" mozallowfullscreen="true" webkitallowfullscreen="true" scrolling="no" style="overflow:hidden !important;"></iframe><br /><a href="">Demi Lovato and Taylor Swift Mashup</a></div>
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    Awesome!!! I hope the maker makes a music video.

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