The trio revealed their ultimate collaboration would be with The Killers frontman as he is ''the godfather of rock-pop''.
Speaking exclusively to BANG Showbiz, the boys said: ''Brandon Flowers would be amazing, he is like the godfather of rock-pop, that would be amazing.
The band is currently gearing up to the release of their debut album 'The Way Back Up' on Friday (10.07.15), but lead singer Stewart Brock confessed he would have turned to reality television to launch his career if he hadn't had success with his bandmates Callum Wiseman and Lewis Gardiner.
He said: ''If I wasn't in the band now I can almost say for certain I would be on 'The X Factor'. My mum used to send me application forms every year.
''I'm not sure how well it would have gone, I think I would have been one of those who gets booted out and cries and throws a strop on Dermot O'Leary's shoulder.
''I would have sung Elton John - 'Rocket Man' or 'Your Song'.
''We love 'The X Factor' and when we were doing gigs last year we were actually gutted that we were missing the live shows every week.''
For now though, the 'Higher Love' singers are focusing on their LP, which they promised shows their ''emotional'' side.
They added: ''It's got some different vibes on there as well, a couple more emotional songs to it; we tried to push ourselves as much as we can with it.''
His new album Underneath It All is out now.