Ronan Keating has opened up about his nerves ahead of his West End debut later this month.

The Boyzone singer, who is playing Guy in the West End production of Once, told Digital Spy: "It's really scary to be honest, because I guess there's a lot expected of me."

However, the singer added that his nerves aren't getting the better of him, saying: "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."

Keating admitted that he never thought the West End was on his horizon, and explained why he decided to take on the role: "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.

"It has great dialogue, great direction. And great songs, my god the songs! It's hard to call it a musical. It's not really a musical it's more like a play with great songs."

Keating will star in Once from Sunday, November 17 until March 21, 2015 at the Phoenix Theatre in London.