Participatory Art

[Let me forward this by saying that music is probably a very popular idea, but I didn't read anyone else's blog before posting this.]
1. The group's leader blows into a real whistle three times, signaling the start of the event.
2. In a predetermined order, the group will start whistling one at a time, and every 5 seconds another group member will join in with their tune.
3. Once all group members have whistled for 2 minutes altogether, the group's leader will again blow into their whistle signaling the end.
This participatory art form will work well, I believe, as the group produces a coherent sound as one, while each member is able to add their own individualistic flair to the project. I think this would work well in a public place such as Liacouras Walk as it would shock the bystanders, yet still allow for any and all who wish to join in to do so.