When it comes to country music phenoms, they’re the new kids on the block … figuratively and literally. The group of three siblings were just wrapping up a world tour when we met – one that included a Superbowl pre-game performance. This picture was shot in the brothers’ dressing room. What you don’t see is the assortment of sports equipment, gym bags and various sundry gym items scattered around the room. Apparently, when they aren’t rocking out – they’re working out. The three were poised and polite and — unlike a lot of siblings – never interrupted each other. Not. Even. Once.