The following content is related to the May 2013 issue of Guitar World. For the full range of interviews, features, tabs and more, pick up the new issue on newsstands now, or in our online store.

When studying jazz guitar, we often begin by exploring the Dorian mode when soloing over m7 chords. But, while that is a great first-choice scale, we often stop there with our explorations of m7 chord vocabulary. One of the mostly widely used scales besides Dorian to solo over m7 chords is the melodic minor scale, which is built like a Dorian but with a natural rather than a b7 note.

Jerry Garcia is best known as the lead guitar player and primary singer/songwriter of the Grateful Dead. Though they are regarded as pioneers of the “jam band” genre that rose to prominence in the late Sixties, the Grateful Dead, unlike many of their counterculture contemporaries, never faltered with the changing times.

When you're recording, you can use all kinds of exotic instruments for embellishing sections of a song. But you probably would like to be able to recreate your recorded performance live. It would be cool to be playing something on a six-string and have certain notes of the melody jump out with a 12-string sound and attack.