sentences:  During the 1970s, 80s and early 90s, Rafael performed around southern California in various groups including as a duo with Rosie Flores.As a solo performer and with his band, he opened shows throughout the southwestern United States for artists including Crosby, Stills and Nash, Sheryl Crow, Laura Nyro, Taj Mahal, Iris DeMent, Emmylou Harris and the legendary John Lee Hooker.In the early 1990s, when the AAA radio format came into being, KKOS in Carlsbad, California was one of the first radio stations to adopt the diverse format.