GUNTER, GLIEBEN, GLAUSEN, GLOBEN. Four nonsensical words that mean nothing. But to the millions of Def Leppard fans they signify that a ceremony of both sight and sound has just begun. Being called “The Next Best Thing to Def Leppard” is an honor that PYROMANIA: The Def Leppard Experience doesn’t take lightly. Nineteen years in the making, the band captures the music and the essence of a rock band that has sold over 100 million albums worldwide.