She sang these songs at the 1969 Woodstock festival and the songs became famous . She is also well known due to her relationship with Bob Dylan and her love for activism in areas such as nonviolence , civil and human rights and the environment . She performed three of the songs at the 1969 Woodstock Festival , helped to bring the songs of Bob Dylan to national prominence , and has displayed a lifelong commitment to political and social activism in the fields of nonviolence , civil rights , human rights and the environment .