A few rock stars are stepping up with items for an auction to benefit those affected by the Sandy Hook school shootings last December in Newtown, CT.

The auction features a guitar autographed by 3 Doors Down , as well as signed memorabilia from fun. and Of Monsters and Men .  In addition, Gotye and Florence + the Machine are donating items to the auction which will be announced later.

The Music for Newtown Auction runs from March 25 through 27 at MusicforNewtown.org .

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