But once the music starts, there's little haughtiness on display. "Michael's son spilled some popcorn on the floor," recalls one insider, remembering a recent day the five-year-old Prince tagged along to the studio. "And Michael insisted, “It's my son who made the mess. I'll clean it up.' All I could think was, I'm watching Michael Jackson on his hands and knees cleaning up the floor. I don't think you'd see Madonna doing that."