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Hunter Hays Steps in for Demi Lovato on VH1's "Philly 4th of July Jam"

Waner Music NashvilleHunter Hayes has signed on to perform on VH1's Philly 4th of July Jam Thursday night.  He's replacing pop star Demi Lovato on the bill since she's down with a case of tonsillitis.

The show starts at 8 p.m. ET and fans can stream the show at too.  John Mayer, Ne-Yo and Grace Potter are among the other acts performing.

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