top, to be incredibly driven. what drives you is your ego. and when you get there, everybody got an ego about it, it can be tricky to stay there. ♪ ♪ ♪ i get my right hand on the wing ♪ >> the three of us stopped looking inward to each other and all started looking outward to what we could be individually. to hell with what my brothers think. and each one of us was thinking that. ♪ don't want to live inside myself ♪ >> traveling the world when you're young with a family member gives you a certain sense of who you are and where you've come from and all of that. so, you kind of walk that tight rope. >> we've been together all our lives, don't forget. we've been together since robin and i were five singing professionally.