Two of the biggest touring acts in country music have been announced as headliners for the 2015 Tortuga Music Festival.

Kenny Chesney and Zac Brown Band will close out the two nights of the festival, which takes place April 11-12, 2015 at Fort Lauderdale Park Beach in Florida. Chesney also headlined at the event last year, but this will be ZBB's first time.

Other country acts among the initial lineup include Jake Owen, Little Big Town, Trace Adkins, David Nail, the Mavericks, Colt Ford, Chase Rice, Sam Hunt, Frankie Ballard, Chase Bryant, the Cadillac Three, Old Dominion, Maddie & Tae, Nikki Lane, Brooke Eden, Drake White and the Big Fire and Judah & the Lion. More will be announced soon.

The event is produced by Rock the Ocean, an organization devoted to scientific research, education and ocean conservation initiatives.

“This event has created such a unique opportunity to celebrate our world’s oceans while educating tens of thousands of music fans about their threatened state,” says Rock the Ocean founder Chris Stacey. “Bringing music, bands and conservation efforts together is a unique concept, and I am thrilled that we are able to bring in talented ocean lovers like Kenny, Zac and Jake this year. These guys really do care about our seas, and will put on a heck of a show in their honor.”

Tickets to the 2015 Tortuga Music Festival will go on sale Friday (Dec. 5) at 10AM ET. For more information, click here.

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