The five-piece performed a rousing rendition of Stars from the musical Les Miserable on Saturday, bringing Amanda Holden to tears and impressing the notoriously difficult Simon Cowell.The group said they were surprised by the judges' reaction and would love to work with Simon in the future.Band member Michael said: "Saturday night was the first time we had heard Simon say: "There's a hit record right there"."That's what we really want - I was thinking: "Quick, get into the studio!""Simon was the judge we wanted to impress most. People have compared us to a musical theatre One Direction. Simon shared their journey with them and it would be amazing if he wanted to share our journey too."Before their audition the boys admitted they had only been together as a group for one month, but their faultless performance cast away any doubts the judges might have had, with all four panellists on their feet at the end."It doesn't really hit you when all the judges stand up," said Michael. "We've watch them on previous years and they so rarely do it that you can't believe they are doing it for you. It was overwhelming."He added that they are keen to bring the genre of musical theatre to a younger generation."We thought about what really gets us going about musical theatre and it's the five or six part harmonies so it made sense to get together," he explained."We feel something special when we sing together. We just get this vibe. In the last few notes of Stars I get goosebumps."Obviously we don't want to make people cry but the fact they feel that emotion like Amanda did means that we are telling the story well. That's what musical theatre does, more so than pop songs."Britain's Got Talent returns to UTV on Saturday from 7.15pm.