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Blake Shelton will have a special guest with him when he performs at this weekend's Academy of Country Music Awards. 

The country star will team up with Shakira to sing their duet, "Medicine."  The two "Voice" coaches recorded the song for the Colombian pop star's recently released self-titled album. 

Shelton is also hosting the ceremony with Luke Bryan. Blake and Shakira are joining an already packed lineup of performers that includes Bryan, Keith Urban, Miranda Lambert, George Strait, The Band Perry, and many others. 

The 49th annual ACM Awards will be presented in a ceremony in Las Vegas, and air on CBS this Sunday.

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