In the back of my mine i do chuckle and ask myself "SELF" why does that person have that in his ear. After all he's not talking to anyone. Is he trying to look important? Why not remove it if it's not being used? Oh well i guess i can't read the motives of other people but i'll bet it's the same thing that people do with cell phones. They talk to the headset but no-one's is on the other end. Ya gotta look important ya know.

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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…….