March is ending with a bang in the country music world, with the release Tuesday of new albums from two of Nashville's biggest stars.

Keith Urban wears his heart on his sleeve on his fifth studio album, 'Defying Gravity.' With upbeat love songs like 'Sweet Thing,' 'Kiss a Girl' and the particularly personal 'Thank You,' Urban's new CD is packed with sunny romance.

"I just write by what drives me, and what's driven me the most has been my wife's love," the country superstar tells the New York Times. "And as it's turned out, this is a great year to have a record about love and hope and light."

Faith Hill will release her first holiday album next Tuesday, and the country sensation was nice enough to give it to us a week early! 'Joy to the World' features Hill singing ten holiday classics, including 'Away in a Manger' and 'Winter Wonderland,' backed by the Nashville Orchestra and two London-based choirs. It also includes one original Christmas song, 'A Baby Changes Everything.' You can listen to the entire CD, track-by-track here.

'Joy to the World' is due in stores September 30. Additionally, a book based on 'A Baby Changes Everything' is set for release on October 28.

Kristy Lee Cook is getting a lot more than just 15 minutes of fame. The 'American Idol' finalist kicked her career into high gear shortly after wrapping up the show, signing with Arista Nashville and releasing her first country single, '15 MInutes of Shame' in August. Now the 24-year-old Oregon native is out with her first CD, 'Why Wait.'

"It sounds like an album that would be mine," she tells Nashville's Tennessean newspaper. "It's got some really fun up-tempo country songs on it. It's got some really nice power ballads on it and some mid-tempos."

"The countrier, the better." That was Darius Rucker's motto when making his new album, 'Learn to Live.' The former Hootie and the Blowfish frontman has already made a smooth transition into the country world, with the CD's first single, 'Don't Think I Don't Think About It,' currently at No. 3 on the song charts. Other focus tracks on the album include 'All I Want,' with Brad Paisley on guitar, and the touching 'It Won't Be Like This for Long' -- a ballad inspired by Rucker's young daughters. Alison Krauss and Vince Gill lend their heavenly voices to 'If I Had Wings.'

The title track of former Trick Pony lead singer Heidi Newfield's solo album says it all. 'What Am I Waiting For' was written in 2006, during what would be the last songwriting session for Newfield and her band mates Keith Burns and Ira Dean. Days later, she was waiting no longer, and announced her departure from the group, setting her sights on a solo career.

"I felt that I had been painted into a corner, and I wanted to be able to branch out," says Newfield. "I wanted to depart from that simply because I felt that I could do more."

Apparently, Heidi's fans and fellow artists shared that feeling with her. Her debut solo single, 'Johnny and June,' is nearing the Top 20, and even had Taylor Swift blogging about it after seeing Heidi at this year's ACM Awards. "I have a total song crush on that song. Brilliantly written," Swift shared with her fans.

Some of country music's biggest stars have come together in the name of Mickey Mouse. The new album, 'Country Sings Disney,' hits stores Tuesday. The 15-song collection features classic and contemporary Disney songs, performed by a star-studded list of artists, including Rascal Flatts, Billy Ray Cyrus, Miley Cyrus, Brad Paisley, Tim McGraw, Faith Hill, Alison Krauss, Martina McBride, Trisha Yearwood, Little Big Town and many more. The selections include songs from movies like 'Dumbo,' 'The Little Mermaid,' 'The Lion King' and 'CARS.'

See the 'Country Sings Disney' full track-listing after the jump, and click here to listen to the entire CD, track-by-track.

Bluegrass icon Dan Tyminski releases his second solo album today. 'Wheels' is the follow up to his critically-acclaimed 2000 release, 'Carry Me Across the Mountain.'

Tyminski, a 13-time Grammy winner, is perhaps best known as the guitarist and supporting singer for Alison Krauss and Union Station. He was also the singing voice of George Clooney in the movie, 'O Brother, Where Art Thou?' -- singing the song, 'I Am a Man of Constant Sorrow.' Tyminski has also recorded with an eclectic group of music superstars, including Dolly Parton, Brad Paisley, Rob Thomas, Reba McEntire and Joan Osborne, among others.

'Wheels' puts Tyminski at the helm of another all-star list of musicians. The album includes guest appearances by Ron Block, Cheryl and Sharon White and Vince Gill. You can listen to the entire album, track by track here.