Rascal Flatts and Jason Aldean are the latest artists to join the legendary Lionel Richie on his upcoming country duets album, due in September.

The Flatts were in the studio this week to collaborate with him on his 1985 hit, 'Dancing on the Ceiling.' The trio's Joe Don Rooney tweeted about their session last night, and called Lionel "one groovy freakin' cat," and said their recording was "magic."

Jason Aldean teamed up with the R&B star on his 1986 No. 1 hit, 'Say You, Say Me,' a couple of weeks ago, and the Georgia native could not be more thrilled. "I was a fan of his for a long time, and got the call that he was doing that duets record and jumped at the chance," Jason tells The Boot. "It was cool. I mean Lionel Richie has written some of the best songs of this generation, period. To be able to go in and work with him ... I mean, talk about a guy who was on 'We Are the World?' It's pretty insane!"

Lionel has dabbled in the country music world before, writing Kenny Rogers 1980 No. 1 hit, 'Lady,' as well as recording a duet with Alabama in 1987 on 'Deep River Woman,' which hit the Top 10 on the country charts.

The pop singer-songwriter has already recorded with Darius Rucker ('Stuck on You'), Tim McGraw ('Sail On'), Kenny Rogers ('Lady'), Willie Nelson ('Easy'), Little Big Town ('Deep River Woman'), Blake Shelton ('You Are') and Jimmy Buffett and the Coral Reefer Band ('All Night Long'). Sugarland's Jennifer Nettles and the Zac Brown Band are also expected to be on the project.

Rascal Flatts have pushed the envelope of collaborations lately, in addition to Lionel Richie. Earlier in the week, the guys were writing with Michael Bolton for the pop superstar's next album, and the group is featured on teen heartthrob Justin Bieber's latest single and video, 'That Should Be Me.'

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