After Florida Georgia Line's massive hit 'Cruise,' which got even bigger when they added Nelly, fans have been wondering if the country group will include another rapper on their sophomore album, specifically Wiz Khalifa.

The duo, comprised of Tyler Hubbard and Brian Kelley, has been hard at work in the studio, putting together a diverse collection of songs."We've been in there for a couple months now, just really taking our time and chipping away at it," Kelley tells Country 92-5. "We've got a couple of awesome songs ... that we're pumped about everybody hearing."

So, the question is: will they collaborate with the 'We Dem Boyz' hitmaker? Hubbard admits, "Man if I'm 110 percent honest with you guys, we actually don't even know for sure, to be honest."

He continues, "It's hard to tie him down. We'll see what happens. It's definitely not a definite."

Even though their future with another rapper is unsure, FGL confirms that although they will be taking some risks on their new album, the sound will still be the same smooth sound fans are used to hearing.

Kelley and Hubbard are set to appear at GMA's 2014 Fun in the Sun Summer Concert Series which kicks off May 23 in Central Park. Lady Antebellum, Brad Paisley, Keith Urban, Luke Bryan will also perform during the summer-long concert series.