Prince: The Story of 1999 bonus feature: Bobby Z, 'Prince went from a caterpillar to a butterfly in that one purple trench coat'
Bobby Rivkin - better known as Bobby Z - first met Prince in the mid-1970s and went on to become drummer for the Revolution. While making 'Prince: The Story of 1999,' Andrea Swensson spoke to Bobby Z about his many memories working with Prince, including Bobby's theory about Prince's famous purple trench coat. Listen to Andrea's full conversation with Bobby Z.










