As GameSpot reported in May, Harmonix, MTV Games, and EA announced that Rock Band Country Track Pack will arrive for the Xbox 360, Nintendo Wii, PlayStation 3, and PlayStation 2 on July 21. Today, the publishers also revealed some new details on what songs would be available for the upcoming track pack.

Willie Nelson's "On the Road Again," Trace Adkins' "Swing," Sara Evans' "Suds in the Bucket," Keith Urban's "I Told You So," Montgomery Gentry's "Gone," and Cross Canadian Ragweed's "Cry Lonely," were announced today as additions to the $29.99 product. Previously announced new tracks include hits like Kenny Chesney's "She Thinks My Tractor's Sexy" and Kenny Rogers' "The Gambler."

The track pack will include 21 tracks from country music's superstars, 13 of which are brand new to the Rock Band platform. These 13 songs will be exclusive to the track pack disc for a limited time, before joining the Rock Band Music Store as downloadable content.

Those who buy the track pack can also download the songs onto their consoles through a free offer with Xbox Live and the PlayStation Network. Once the songs are downloaded, they will appear in the Rock Band library and can be integrated into set lists and played in all game modes.

The full lineup of the Rock Band Country Track Pack is listed below.

New songs:

Alan Jackson - "Good Time"
Cross Canadian Ragweed - "Cry Lonely"
Jason Aldean - "She's Country"
Keith Urban - "I Told You So"
Kenny Chesney - "She Thinks My Tractor's Sexy"
Kenny Rogers - "The Gambler"
Martina McBride - "This One's For the Girls"
Montgomery Gentry - "Gone"
Rascal Flatts - "Me and My Gang"
Sara Evans - "Suds in The Bucket"
Shania Twain - "Any Man of Mine"
Trace Adkins - "Swing"
Willie Nelson - "On the Road Again"

Previously released songs:

Brad Paisley - "Mud on the Tires"
Brooks & Dunn - "Hillbilly Deluxe"
Dierks Bentley - "Free and Easy" ("Down the Road I Go")
Dixie Chicks - "Sin Wagon"
Drive-By Truckers - "3 Dimes Down"
Lucinda Williams - "Can't Let Go"
Miranda Lambert - "Gunpowder & Lead"
Steve Earle - "Satellite Radio"