Every dot is a real Citi Bike dock. Two thousand of them, give or take, form a small jazz combo (walking bass, piano, vibes, sax, brushes) that has been playing without pause since the first bike was unlocked.

The harmony moves through a slow chorus. A note is placed precisely where the dock's fullness sits between empty and overflowing. Rush hour drains the racks and fills the band with motion; at 3 a.m. the silences grow longer. Whatever is playing now has not played before and will not play again.

Share your location and the docks nearest you grow louder. The piece rearranges itself around your body. You are listening to a portrait of where you stand, pedaled by the city you are standing in.