Here's another link. If you watch the third video, you will see Tao, Rick Nestler, Tom Chapin, Arlo, David Bernz, David Amram and a bunch of other well known Sloop Singers up there with their instruments. This was at 1 AM at Columbus Circle. The march was downtown from Symphony Space, where they had been doing a fund raiser for Clearwater. Tao did the organizing so that people who were not at the fundraiser could join in.

http://www.alternet.org/newsandviews/article/684510/pete_seeger_takes_owsers_on_a_singing_march--watch_video/