♪ >> reporter: they were taking piano lessons before their feet could even touch the pedals. five siblings, three girls, two boys, with one amazing gift. ♪ when they were young, their parents, keith and lisa, wedged five pianos into their home. >> we got rid of the dining room table, and there were pianos in the bedrooms. >> reporter: they practices six hours a day. partly out of necessity, partly out of pure talent. they all learned to play in amazing synchronicity, a singular sound that shot them to juilliard and then stardom, as high as number one on the classical charts. but this week the browns' life played out in a much different way. their father and one-time manager, pleaded guilty thursday to sexually abusing all three of his daughters. >> he is terribly remorseful for what has happened and for what he's put his family through. >> reporter: court records