The lineup for the 2014 Rock the Ocean Tortuga Music Festival just got even hotter. The festival has added a mix of country legends, superstars and rising acts to its already-impressive roster.

Hank Williams Jr., Dierks Bentley, Brantley Gilbert, 38 Special, Parmalee and Eric Paslay have been added to the festival, which takes place April 12-13 in Ft. Lauderdale, Fla.

They join previously announced headliners Luke Bryan and Eric Church, as well as Sheryl Crow, Brett Eldredge, Train, Billy Currington, Frankie Ballard, Ziggy Marley, Delta Rae, Cole Swindell and many others.

In addition to offering two days of non-stop music, the festival has an even bigger goal -- to raise awareness of issues impacting the world’s oceans, while also supporting marine research and conservation. Last year’s inaugural event, which included Kenny Chesney, the Eli Young Band and Gary Allan, drew more than 25,000 fans and raised over $70,000.

Tickets are on sale here.