Here's Pete Seeger performing "If I Had a Hammer" live in Australia in 1963. It was first written in 1949 in support of the progressive movement and recorded by The Weavers.
From a controversial episode on The Smothers Brothers, Seeger performs the South African folk song "Wimomeh" (also known as "The Lion Sleeps Tonight") and "Where Have All the Flowers Gone?" Originally, Pete sang his song "Waist Deep In The Big Muddy" in between these two songs but CBS deemed it too political to air and deleted it from the broadcast. However, he did perform the song on a subsequent broadcast and this time CBS allowed it to air.
Farewell to a folk legend!