This site pipes a live Caltrans camera on the southbound 101 in Studio City straight into a synthesizer, where lane is pitch — the fast lane sings highest, the slow lane lowest — so the shape of the melody is the literal shape of the traffic. Every car that crosses the line plays a note, composed live in your browser as it happens; a jam builds during rush hour and thins to single, spaced-out tones at 3 a.m. Free, and only as good as the camera feed.