I have a household of nonstop music-making children, but one of them also talks, dances, plays instruments, and vocalizes constantly, so much so that even the others find it excessive! It's just an ongoing conversation about respecting other people's personal space--physical, visual, and aural. That, and some of our favorite family aphorisms: Fit the size of your sound to the size of the space you're in. Keep your volume low enough that the people at the next table in the restaurant can't hear you.
We've seen some moderation in adolescence, but not as much as you'd think...singing and dancing in the aisles of Target earlier today! DC has such an ebullient personality, though, that people typically smile.
