Although Leonard Dillon's ever-changing Ethiopians predated reggae with irresistibly perky 1967 ska hits like “Cool It Amigo,” he came into his own a decade later as a devout Rastafarian. Sung in his cautionary, wistful voice, roots-rocking tracks like “You Got To Be Clean” and “Guilty Conscience” were mellow yet commanding, with even a cover of The Beatles' “Let It Be” given a Rastafarian twist.