It's one of his earliest memories: He's four years old, standing up on a box in front of his father's big band, baton in hand, conducting. Though his dad stood behind him, doing the real work, for Dan it was a foreshadowing of what his life would be -- following in his father's footsteps to become the leader of the band. "It was an amazing feeling," he declared decades later during a series of discussions for these notes. "To be immersed in music. It felt both very magical and powerful. And I was fearless."