The Boyzone singer will star in the West End production of 'Once as Guy', following on from the likes of EastEnders' Declan Bennett and 'Doctor Who' star Arthur Darvill, reported Digital Spy.
"It's really scary to be honest, because I guess there's a lot expected of me. I'm really looking forward to it. I have a lot of other work to do with guitar playing and acting and singing and all that. So we'll see how it goes. I'm excited," he said.
Speaking about swapping a concert for a musical, he said, "To be honest, I actually never thought I would do the West End, but it's this role that excited me and made me want to do it.