The Fender guitars, electric pianos, and the saxophone are true instruments of the surf music vibe. The Bel-Airs, The Challengers, The Shadows, The Atlantics, Dick Dale and the Del-Tones and the Surfaris topped the charts. The genre reached national exposure when it was represented by vocal groups such as the Beach Boys and Jan and Dean. Their "vocal surf" style drew more from African-American genres such as doo wop with its scat singing and tight harmonies. Dale is quoted on such groups: "They were surfing sounds [with] surfing lyrics. In other words, the music wasn't surfing music. The words made them surfing songs. ... That was the difference ... the real surfing music is instrumental.