Here a question:
As Susan Boyle lives her dream, what have we learned?
This article might be worth giving a read as it answers the
question quite nicely.

As Susan Boyle lives her dream, what have we learned? -- chicagotribune.com

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"What you hear in a great jazz band is the sound of democracy. “The jazz band works best when participation is shaped by intelligent communication.”
Harmony happens whenever different parts get to form a whole by means of congruity, concord, symetry, consistency, conformity, correspondence, agreement, accord, unity, consonance…….