The group, who are gearing up for the release of their fifth studio LP Above The Noise, said that producer Dallas Austin originally featured as a rapper on one of the tracks.
"A rap? Well, not with us performing it," Tom Fletcher told Bang Showbiz.
"If we featured a rapper, we could do that. I'd like us to do something with Tinie Tempah, that would be cool. Dallas did do a rap on one of our tracks. We did a thing on the album, that was really cool."
The band also admitted that they enjoyed working on the record with Austin in the US because they weren't distracted.
Harry Judd said: "We went to Atlanta where Dallas is based, it's a great place to go and work, we've never released anything over there and never promoted anything, so nobody knows who we are over there.
"It's purely for recording and hanging out with Dallas. it was incredible. There's a good feeling out in America."
Fletcher added: "It's great being there with Dallas too, because everybody knows who Dallas is over there, he's a big celebrity - so he knows how to get things together.
"We went out quite a lot because we were all in a hotel, so we didn't have to go too far. And we were all up for it, we had nothing else to do but go out."
The band will release Above The Noise exclusively through their new 'Super City' website.