Cell Phone Symphony

From the article...

Last Spring I received an email from someone who had heard about us on This American Life. He wrote:

There's a scene I've been wanting to pull off, but I don't have the manpower. Feel like helping?

This is the gist: you know The Strand? (I work there). Know the bag check? As you can imagine, with all those bags and coats and things, people leave their cell phones with the guy. Occasionally they go off.

What I'm thinking is, you get a group of people, thirty or so, who all come into the shop and check their bags with their phones in 'em. At some later point, every single phone checked into the bag check starts to ring at the same time. It'd be bedlam.