Stoner Rock Riffing Volume 1 brings the exciting sounds and techniques of Stoner Rock to your fingertips. Tune down to C, and let the riffing begin! One very big difference with Gemini Guitar's video lessons are that students learn everything within the context of real sounding music. These aren't a bunch of sterile, boring and lifeless exercises. They are real sounding riffs, written with passion and a genuine love for the style explored.