What were the most important principles and moral standards in ancient Greek cultures?

Although many musicians participated in the bebop revolution, and history has undoubtedly forgotten many who were in the trenches of the harlem jam sessions, it is clear that the most important and influential architects of bebop were and

Acurious child asked his mother: “mommy, why are some of your hairs turning grey? ” the mother tried to use this occasion to teach her child: “it is because of you, dear. every bad action of yours will turn one of my hairs grey! ” the child replied innocently: “now i know why grandmother has only grey hairs on her head.”

How does the music sync with the dancing?