Keith Urban will host his fourth annual We're All for the Hall benefit concert on April 16 at the Bridgestone Arena in Nashville. This year's theme will be "Rebels and Renegades, the Outlaws Are In."

Confirmed guests include Trace Adkins, Jason Aldean, Rosanne Cash, Eric Church, Brantley Gilbert, Kid Rock, Kris Kristofferson, Loretta Lynn, Tim McGraw, Montgomery Gentry, Willie Nelson, Billy Joe Shaver and Hank Williams Jr.

Vince Gill and Urban will serve as musical directors.

"The purity in making music on your own terms -- to create art in your own way -- for me is at the heart of the Outlaw spirit," Urban said. "It's those Outlaws that we celebrate this year who not only made it possible for a guy like me to do what I love but who play a pivotal role in the strength of country music's diversity."

Reserved seats are $50 and $35, while a limited number of VIP packages ranging from $200 to $3,500 are also available. Tickets go on sale on March 1 at 10 a.m. CST via Tickemaster.

All proceeds benefit the Country Music Hall of Fame and Museum. Funds directly support the museum's mission and underwrite preservation efforts, exhibitions and educational programs.