The two choirs have their first public performances in Dublin and Waterford tonight, and ahead of that, David Brophy reveals they will be teaming up with the RTÉ Concert Orchestra to record a charity single. That's not the end of the surprises though as Bressie, former Westlife star Shane Filan and Ireland's current favourite sweetheart, Ed Sheeran, all show up during rehearsals, which is very sound of those lads, we have to say.