The Boot rounds up today's country music news from around the web.

Gary Allan, Dierks Bentley, Eric Church, Kelly Clarkson, Florida Georgia Line, Hunter Hayes, Miranda Lambert, Jake Owen, Brad Paisley, Blake Shelton, Taylor Swift, the Band Perry, Keith Urban and Zac Brown Band have all been added to the 2013 CMA Music Festival lineup. They join previously announced performers Luke Bryan, Lady Antebellum, Little Big Town and Carrie Underwood. This year's four-day festival will take place June 6-9 in Nashville. Get your tickets here.

Congrats to George Strait whose Cowboy Rides Away Tour has debuted at No. 1 on Pollstar's Concert Pulse, topping Justin Bieber, Neil Young & Crazy Horse, Dave Matthews Band and The Who (respectively). The King of Country music has sold out 15 venues so far on his farewell tour, and has averaged $1.4 million in gross sales per stop.

Jana Kramer's hubby-to-be, Brantley Gilbert has a new nickname: "groomzilla." "We were going to look at wedding locations," Brantley told ABC News Radio recently, "And the wedding planners, I was supposed to be following them, and they were driving, like, 30, and I just can't work with that. I was at home in Georgia, and I know all those roads and they were getting lost. Finally, I was just like, 'To hell with it.' I passed 'em, and I met 'em there. I was like, 'Y'all just meet us at the place. Y'all got GPS.'" Brantley adds that his main concern is his future bride's happiness. "I'm just picky," he explains. "I want to make sure she's happy on that day." [Quotes via Country Weekly]

TUNE-IN ALERT: Don't forget to check out Sarah Darling, who's performing on "Conan" tonight. The show airs at 11:00 PM ET on TBS. And, tomorrow (Tuesday, March 5), Luke Bryan visits "The Ellen DeGeneres Show" and celebrates the release of his Spring Break...Here to Party album. Wonder if he'll lose his shirt again this time?

What was REO Speedwagon doing in Nashville last week for Country Radio Seminar? "[Brad Paisley] gave me a call a few weeks ago, and it's always been one of my bucket list items to hear a banjo solo on 'Riding the Storm Out,' so I figured this is my chance," lead singer Kevin Cronin told Music City newspaper The Tennessean of the band's performance at an industry showcase. "It's like I was 10, in my bedroom, with a Walkman, a tape and a guitar, and I was practicing," added Brad, whose band stayed on stage for the performance, with banjo player Kendal Marcy fulfilling Kevin's musical wish. [Tennessean]

The Band Perry is looking for more wall space now that "Better Dig Two" has been certified platinum by the Recording Industry Association of America for sales exceeding one million units. The song is the first single from the sibling trio's Pioneer album, due in stores April 2.

Zac Brown is the next country singer participating in the Ram Truck brand's "Road to the Ram Jam," which will auction the Georgia native's 2012 Ram 1500 Laramie Longhorn starting March 5 at 7:00 pm ET. Proceeds from the sale will go to the singer's Camp Southern Ground, which provides programs for children of diverse abilities and backgrounds. Last week, Billy Currington's pickup brought in $34,578 for Team Rubicon, while Kellie Pickler's raised $36,200 for the USO Warrior and Family Care program and Brantley Gilbert's made $34,552 for the IAVA. Easton Corbin's truck will go up for actual on March 18. Bid on Zac's truck here.

Ashley Monroe and the Nashville-based band Striking Matches have joined a a special South by Southwest (SXSW) showcase set for March 11 in Austin. Headlined by Jim James of My Morning Jacket, the showcase, presented by CMT, VH1 and MTV, will take place at the Control Room in downtown Austin. Also appearing will be Guards, Youngblood Hawke, ZZ Ward and Elle King. SXSW badge holders will be admitted for free and general admission tickets will also be available for the 18-and-older show. Ashley's Like a Rose album hits stores tomorrow. Listen to the album's "Morning After" here. [CMT]

Watch Jana Kramer's 'Whiskey' Video