http://www.maybevideodoes.de/sites/drumline.html

Literal:
Drumline is an outdoor, sculptural intervention using electronic media to activate three identical snare drums in tandem with the flow of traffic. The shiny chrome snare drums are hung from already existing flag pole holders on a building’s facade. Each drum is equipped with a motorized drum stick. Three rubber hoses associated with each drum are laid out across the street and its sidewalk, perpendicular to the stream of traffic.

Via: Alg-a.org