Music My First Pedal: Dweezil Zappa Plays the MXR Distortion Jan 7, 2018 Facebook Twitter Pinterest WhatsApp Linkedin ReddIt Email Print Dweezil Zappa’s pedal journey began with the MXR Distortion Plus, the result of his admiration of Randy Rhoads. His journey with the pedal continues to this day, as you can see from this video.