Pete Seeger's 90th birthday will be celebrated at a huge hootenanny-style concert at Madison Square Garden in New York City on Sunday 3 May.

singers include:

Pete Seeger
Bruce Springsteen
Steve Earle
Eddie Vedder
Taj Mahal
John Mellencamp
Ani DiFranco
Arlo Guthrie
Bernice Johnson Reagon
Bela Fleck
Guy Davis
Billy Bragg
Larry Long
Bruce Cockburn
Emmylou Harris
NYC Labor Chorus
Joan Baez
Tao Rodriguez-Seeger
Ladysmith Black Mambazo
Michael Franti
Tom Paxton
Tommy Sands
Ramblin' Jack Elliott

more info at http://www.seeger90.com/