Now in its 20th year, The Mp3 Experiment is a participatory audio adventure where attendees use a smartphone app to listen to synchronized secret instructions in a public space via headphones.

It's just about the most fun thing you can do with a crowd of thousands of strangers, so register to participate in this unique spectacle at RSVP on Partiful to receive updates and so we can text you last minute info (like if there is a rain delay).

We will release the complete details including exact starting locations and downloadable app information a couple of days before the event to all who have RSVPed.

This program, as always, is free and open to all ages, so spread the word!

More About Improv Everywhere
Improv Everywhere is comedian and director Charlie Todd‘s decades-long project to bring extraordinary moments of surprise and delight to ordinary places. Based in New York City but producing projects around the world, Improv Everywhere pioneered large-scale surprise public performances, long before anyone had heard of the term “flash mob.”

More about the Hudson River Park Trust
In 1998, New York State passed a new law that established the Hudson River Park Trust (the “Trust”) to design, build, operate and maintain a new public park and estuarine sanctuary in and along several miles of the Manhattan shoreline. The Trust employs a focused, diverse staff with experience in parks, design, marine science, public programming, finance, public policy, operations, security, management and maintenance. Pursuant to its mandate, the Trust also works closely with community boards, elected officials and a multitude of civic and non-profit partners as well as the business community to advance the Park mission.