Pete Seeger entertaining at the opening of the Washington labor canteen, sponsored by the United Federal Labor Canteen, sponsored by the Federal Workers of America, Congress of Industrial Organizations (CIO). First lady Eleanor Roosevelt seen at center. (Credit: Joseph A. Horne, via the Library of Congress/Public Domain)
Pete Seeger
Pete Seeger, 7th March 1978. (Photo by M. Fresco/Evening Standard/Getty Images)
Billy Joel Receives Honorary Degree From The Manhattan School of Music - New York
Pete Seeger, Billy Joel and Susan Graham pose before receiving an honorary Doctorate from the Manhattan School of Music at the Riverside Church in Harlem on May 16, 2008 in New York City. (Photo by Donna Ward/Getty Images)
Pete Seeger Announces New Music Initiative At South African Film Festival
Pete Seeger (2nd R) and director Francois Verster (2nd L) appear at a Q & A session to announce Seeger's New Music Initiative, following the premiere screening of "A Lion's Trail," directed by Verster, at the South African Film Festival April 27, 2004 in New York City. (Photo by Roberto Rabanne/Getty Images)
Bruce Springsteen (R), Pete Seeger (C),
Bruce Springsteen (R), Pete Seeger (C), and Seeger's grandson Tao Seeger (L) perform at the 'We Are One" concert, one of the events of US president-elect Barack Obama's inauguration celebrations, at the Lincoln Memorial in Washington on January 18, 2009. (Credit: ROBYN BECK/AFP/Getty Images)
We Are One: The Obama Inaugural Celebration At The Lincoln Memorial
Pete Seeger and Bruce Springsteen (R) perform in front of the Lincoln Memorial during the 'We Are One: The Obama Inaugural Celebration At The Lincoln Memorial' on January 18, 2009 at the National Mall in Washington, DC. The event includes a diverse array of talent featuring both musical performances and historical readings and an appearance by U.S. President-elect Barack Obama. (Photo by Justin Sullivan/Getty Images)
2009 New Orleans Jazz & Heritage Festival Presented By Shell - Day 2
Tao Rodriguez Seeger and Pete Seeger perform at the 2009 New Orleans Jazz & Heritage Festival at the Fair Grounds Race Course on April 25, 2009 in New Orleans, Louisiana. (Photo by Rick Diamond/Getty Images)
2009 New Orleans Jazz & Heritage Festival Presented By Shell - Day 2
Pete Seeger backstage at the 2009 New Orleans Jazz & Heritage Festival at the Fair Grounds Race Course on April 25, 2009 in New Orleans, Louisiana. (Photo by Rick Diamond/Getty Images)
Clearwater Benefit Concert - Show
Arlo Guthrie, Bruce Springsteen, Tom Morello, Joan Baez, Dave Matthews, Warren Haynes and Pete Seeger perform in the Clearwater Benefit Concert Celebrating Pete Seeger's 90th Birthday at Madison Square Garden on May 3, 2009 in New York City. (Photo by Bryan Bedder/Getty Images)
Clearwater Benefit Concert - Show
Musician Pete Seeger performs in the Clearwater Benefit Concert Celebrating Pete Seeger's 90th Birthday at Madison Square Garden on May 3, 2009 in New York City. (Photo by Bryan Bedder/Getty Images)
Clearwater Benefit Concert - Media Room
John Mellencamp and Pete Seeger attend the Clearwater Benefit Concert celebrating Pete Seeger's 90th Birthday at Madison Square Garden on May 3, 2009 in New York City. (Photo by Neilson Barnard/Getty Images)
Clearwater Benefit Concert - Media Room
John Mellencamp, Pete Seeger and Tao Seeger attend the Clearwater Benefit Concert celebrating Pete Seeger's 90th Birthday at Madison Square Garden on May 3, 2009 in New York City. (Photo by Neilson Barnard/Getty Images)
From L to R, Joan Baez, Bruce Springstee
From L to R, Joan Baez, Bruce Springsteen, Pete Seeger and Tom Morello are seen during a concert for folk music legend Seeger's 90th birthday at Madison Square Garden in New York on May 3, 2009. Proceeds from the show will go to Hudson River Sloop Clearwater, an organization founded by the singer 40 years ago to preserve and protect the Hudson River. (Credit: TIMOTHY A. CLARY/AFP/Getty Images)
Clearwater Benefit Concert - Show
Musician Pete Seeger performs in the Clearwater Benefit Concert Celebrating Pete Seeger's 90th Birthday at Madison Square Garden on May 3, 2009 in New York City. (Photo by Bryan Bedder/Getty Images)
Clearwater Benefit Concert - Show
Musician Pete Seeger performs in the Clearwater Benefit Concert Celebrating Pete Seeger's 90th Birthday at Madison Square Garden on May 3, 2009 in New York City. (Photo by Bryan Bedder/Getty Images)
Clearwater Benefit Concert - Show
Musicians Toshi Reagon, Steve Earle, Pete Seeger and Tao Rodriguez-Seeger perform in the Clearwater Benefit Concert Celebrating Pete Seeger's 90th Birthday at Madison Square Garden on May 3, 2009 in New York City. (Photo by Bryan Bedder/Getty Images)
2009 Dorothy And Lillian Gish Prize Special Outdoor Tribute
Singer Pete Seeger performs at the 2009 Dorothy and Lillian Gish Prize special outdoor tribute at Hunts Point Riverside Park on September 3, 2009 in New York City. (Photo by Astrid Stawiarz/Getty Images)
2009 Dorothy And Lillian Gish Prize Special Outdoor Tribute
Singer Pete Seeger performs at the 2009 Dorothy and Lillian Gish Prize special outdoor tribute at Hunts Point Riverside Park on September 3, 2009 in New York City. (Photo by Astrid Stawiarz/Getty Images)
2009 Dorothy And Lillian Gish Prize Special Outdoor Tribute
Pete Seeger (L) receives the 2009 Dorothy and Lillian Gish Prize at Hunts Point Riverside Park on September 3, 2009 in New York City. (Photo by Astrid Stawiarz/Getty Images)