By: Rob WilliamsThough the band specializes in straightforward pop rock, frontman, and main songwriter John Rzeznik writes most songs using a variety of different guitar tunings. There are so many alternate tunings in the band's catalogue that Rzeznik tours with 30 different guitars of all makes and models. "I have a pretty big footprint when I travel; you just can't get the right sound out of the guitar in my head. Sometimes I hear harmonic overtones and droning strings and they create this crazy kind of wash of sound," he says during a recent