Harmonically this song never leaves: codominant Bb (dusty rose) and F (blush) hold the centre from first second to last, and the loudness span is 4.2 decibels. The drama lives at the rim, where 859 sharp attacks against 441 available beats crowd the edge as a spiky teal percussion fringe, nearly 2 hits for every pulse. All that motion, running in place: that is the groove, drawn.