Pete Seeger, the legendary folk singer-songwriter, died Monday at the age of 94.

Kitama Cahill Jackson, Seeger's grandson, tells the New York Times that the folk singer died of natural causes NewYork-Presbyterian Hospital.

In the 1950s and 1960s, Seeger championed folk music and protest songs.  As a member of the Weavers, he was blacklisted by Joeseph McCarthy and the House Un-American Activities Committee.

Seeger has written or co-written several classics including Turn, Turn, Turn which became a hit for The Byrds.  He also wrote the protest song Where Have All the Flowers Gone? and If I Had a Hammer, which became a hit for Peter, Paul & Mary.

Two of the most notable American artists of all time, Bob Dylan and Bruce Springsteen, cite Pete Seeger as an influence.