Mobile theater

A wireless performance where the audience does not need to be within ear
shot to follow the show. Instead the audio of the performance is
transmitted on a small wave radio signal and so can be picked up by
audience members within the performance area. This allows the audience to
roam the space freely and with their identity as observers concealed, the
illusion of a private personal performance for each individual is gained.

visit Elly Bowness's website at : http://www.ellybowness.com.