Sad to hear about this. Saw the MM club a few times myself.
By the time she hit the scene I was a teenager and considered
the show so much cornball. But I agree she was a beaut.

That MM club song drove me bananas. Don't know what was worse,
the MM club theme or it's a small world at Disney Land.

THE MICKEY MOUSE CLUB 1960's INTRO - YouTube

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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…….