Johnny "Vatos" Hernandez's professional drumming career began at age seventeen with a USO tour to South Vietnam. At nineteen, he was playing in local big bands, the LACC Studio Jazz Band and the Si Zenter Big Band. During the same time, Hernandez played in a variety of pit orchestras and backing acts, like Bob Hope, Billy Daniels and Gordon McCray. In the 1970s, he played with The Helen Reddy Band and served as the house drummer of "The Midnight Special" television show. There, he played with acts, such as Frankie Avalon, Petula Clark, Keith Carradine and Martin Mull. When Helen Reddy hosted "The Tonight Show With Johnny Carson," Hernandez had the honor of sitting in with The Doc Severinsen Band. He has now been extensively recording and tour with Oingo Boingo for over a decade.