Back in 1997 before MASSMoCA opened Joe Thompson had the idea to activate the town of North Adams with sound art. Harmonic Bridge was O+A’s installation, and it continues to this day, generating harmony from the roadway noise of the Highway 2 overpass. Now there is a live feed of the result, some 19 years later, still going strong in real-time. (Live Webcam)
And here is a vimeo O+A made many years later for those who want details and cannot visit the site.