The performance lineup for the CMT Music Awards has nearly doubled. 

Keith Urban, Lady Antebellum, and Brantley Gilbert are among the ten new stars who've signed on for the event.  Kacey Musgraves, Dierks Bentley, and Hunter Hayes are now on board as well. 

They're joining a roster that already boasts the event's top nominees, Miranda Lambert, Luke Bryan, and Florida Georgia Line. 

The 2014 CMT Music Awards will be presented in a ceremony in Nashville, and air on CMT on June 4th.

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