Odetta was an American singer, songwriter, actress, and civil rights activist. She was known as the 'Voice of the Civil Rights Movement' for her powerful and influential singing style. Her music was a mix of blues, folk, gospel, and traditional songs, and she was a major influence on the folk revival of the 1960s. Odetta was a powerful advocate for civil rights and social justice, and her music was used to inspire and motivate people to fight for their rights.