William Butler Yeats once said, “How can we know the dancers from the dance?” What do you think he meant by that?

Answer : Dancers worldwide all have different styles of dance that they perform. There are signature moves or a unique "addition" to how much effort they put into dancing and perfection.

a chromatic scale uses the twelve tones of the octave, while a regular scale only uses eight, or seven different notes (as the first note is played twice)