breath is rhythm is motion is sound. sound is motion is rhythm is breathing. (in Newtonian mechanics, momentum is the product of the mass and velocity of an object) Air, scratchy noise, a back-and-forth movement, a waxing and waning, an approach, and a distance. In the loop: Heard as a regular rhythm, a pulse, an association with breathing. A sequence of movements, a physical sensation. A body of sound in the figurative sense. It is the recording of the bellows of an accordion: opening and closing, pulling apart and pushing together: the (air) sound of a movement. This sample of the a...