poetry in motion

noun2

1. •
   Fluid, graceful movement.

   • From the front of the hood to the tips of the tail lights [of the car], the lines, were poetry in motion. — 1948
2. •
   A person or thing that moves in a particularly fluid, graceful way.

   • Poetry in motion, walkin' by my side / Her lovely locomotion keeps my eyes open wide / Poetry in motion, see her gentle sway / A wave out on the ocean could never move that way — 1960