1919- . US folk singer and songwriter of antiwar protest songs, such as `Where Have All The Flowers Gone?' 1956 and `If I Had A Hammer' 1949. Seeger was active in left-wing politics from the late 1930s and was a victim of the witch-hunt of Senator Joe McCarthy in the 1950s. As a member of the vocal group The Weavers 1948-58, he popularized songs of diverse ethnic origin and had several hits.