Keith Urban will momentarily step away from his 'American Idol' duties to host his fourth-annual We're All for the Hall benefit concert, scheduled for April 16 at Nashville's Bridgetone Arena.

This year's concert has adopted a 'Rebels and Renegades, the Outlaws are IN' theme and will feature performances from country music's most rebellious artists, including Vince Gill, 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.

The 2013 concert is the first to take on a specific theme. Urban admits that the outlaw mentality perfectly compliments the creative spirit of the benefit program. “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,” he says in a statement on his official website. "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.”

Urban first introduced the We're All for the Hall concept in 2010 and has since raised approximately $1.5 million, which is donated directly to the Country Music Hall of Fame. The Aussie superstar works with the longstanding landmark to support the museum’s mission, preservation efforts, exhibitions and educational programs that educate the public on country music's cultural significance in our society.

Tickets for the 2013 We're All for the Hall event go on sale March 1 at 10AM CST at Ticketmaster's official website, all Ticketmaster locations and the Bridgestone Arena box office. Seats are priced at $35 and $50 with multiple VIP packages available, as well. Museum members enjoy a special pre-sale ticket opportunity for the event.

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