My_My-Hey_hey_out_of_the_blue_speed_of_harmonic_change_diagram
My_My-Hey_hey_out_of_the_blue_speed_of_harmonic_change_diagram
My_My-Hey_hey_out_of_the_blue_speed_of_harmonic_change_diagram
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"She will never learn the most necessary, most difficult and principal thing in music, that is time, because from childhood she has designedly cultivated the habit of ignoring the beat." Letter to Leopold Mozart (24 October 1777)
median speed 