Photo Coverage: Participants in the Mp3 Experiment in ivy in New York's Bryant Park

Participants in the Mp3 Experiment hide in ivy in New York's Bryant Park October 2, 2010. The event, organised by Improv Everywhere, involves hundreds of participants listening to a synchronized mp3 file and following the narrated instructions on a list of quirky actions.

Participants in the Mp3 Experiment hide in ivy in New York's Bryant Park October 2, 2010. The event, organised by Improv Everywhere, involves hundreds of participants listening to a synchronized mp3 file and following the narrated instructions on a list of quirky actions. UNITED STATES - Tags: SOCIETY

A woman hides in a patch of ivy in Bryant Park as she takes part in the Mp3 Experiment in New York October 2, 2010. The event, organised by Improv Everywhere, involves hundreds of participants listening to a synchronized mp3 file and following the narrated instructions. UNITED STATES - Tags: SOCIETY