HIRAX began in Los Angeles in 1984, playing with Slayer, Metallica, and Exodus, who were all part of the exciting new metal emerging. HIRAX released their first full-length recording in 1985 on Metal Blade titled “Raging Violence”. The combination of the heaviness of metal and the speed of hardcore became known as “crossover”. Katon W. De Pena’s upper-range clean vocals stood out from the pack.