█ Intervallic Fretboard (guitar instructional book) in Tucson, Arizona For Sale

Intervals at the heart of a different approach to learning the guitar fingerboard and taking advantage of its layout.
To help move about the guitar neck more freely, and facilitate improvisation, with less reliance on shapes/patterns.
Featured in Guitarist and Guitar Techniques magazines.
Excerpts on the book's site at: intervallicfretboard.com