Florida Georgia Line have revealed that they are working with another well-known duo. Tyler Hubbard and Brian Kelley will collaborate with Benji and Joel Madden, formerly of pop-punk band Good Charlotte and now known as the Madden Brothers, for a brand-new project.

The FGL guys say they formed a quick friendship with the rockers, both having admired each other's work for some time.

"We got along with these guys the minute we met," Joel Madden tells Rolling Stone Country. "Then [we] ended up having an awesome hang one night in New York City. We're really excited to go to Nashville, hang and write songs. We think it's really cool our paths crossed and that we get to experience Nashville and music with these guys. We are big fans."

The foursome won't reveal too many details about what they are working on, other than that they will record the new project in Music City.

"We're such big fans of those guys," Hubbard adds. "We're going to be writing with them and recording at the Treehouse studio in Nashville ... We're really excited."

The Madden Brothers recently released their own single as a duo, 'We Are Done,' which was included on their first studio album as a duo, 'Greetings From California.'

This isn't Florida Georgia Line's first time collaborating with artists outside of their genre. The 'Sun Daze' singers previously recorded with Nelly for a remix of their debut single, 'Cruise,' and were rumored to be in talks with rapper Wiz Khalifa for their sophomore 'Anything Goes' record, although he does not appear on the album.

Hubbard and Kelley's 2015 Anything Goes Tour kicks off on Jan. 15 in Toledo, Ohio. See a list of all of their upcoming concerts here, and download 'Anything Goes' here.

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