A lead singer of the female trio the Gaylettes in the late 1960s, Judy Mowatt joined another set of vocalists in 1974: the I-Threes. Along with Marcia Griffiths and Rita Marley, Mowatt backed Bob Marley as the opening act for the Jackson 5 in 1975. The trio performed with the reggae legend on tour and in studio until his death six years later. A member of the Twelve Tribes of Israel, Mowatt was herself a powerful advocate for Rastafarian and feminist causes. In 1980, she released her first solo album, Black Woman, and in 1986, she was the first female singer to earn a Grammy nomination in the reggae category.