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An animated image of the Earth rotates on a sphere. This artwork has two versions: a large-scale public art installation made with a custom-made spherical balloon and a smaller version built with a custom-made spherical LED display for the project. 

In the large-scale version, projectors showed a rotating upside-down version of the Earth on the spherical balloon's surface. Passers-by could stand in front of a station with a camera to cast their tracked movement as shadows onto the globe. The shadows alternated between 2 and 14 metres in height depending on how far the visitor was from the camera. As shadows covered different cities, they automatically triggered live local radio stations from those locations, thus creating a global polyphonic tuning device.

In the smaller version, the Earth rotates with its poles parallel to the ground on a custom spherical LED display. As people approach and move around the piece, their movements are tracked and reflected on the sphere as black shadows. As in the larger piece, as shadows cover different cities, they automatically trigger live local radio stations, which playback from the speakers at the base.