12 Key Mastery Download Version

5.00 out of 5 based on 7 customer ratings
(7 customer reviews)



  1. Introduction
  2. Mapping Out Key Centers
  3. Phase 1
  4. Phase 1 Ascending the Key of C
  5. Phase 1 Ascending in 12 Keys
  6. Phase 1 Descending the Key of C
  7. Phase 1 Descending in 12 Keys
  8. Phase 2 – 12 Keys in Each Position
  9. Chord Practice in 12 Keys
  10. Major7th(no5) Inversions in 12 Keys
  11. Chord Scale Practice
  12. 7th(no5) Chord Scale in 12 Keys


Category: .

Product Description

Okay, you have some chops, you know some licks but you find yourself getting lost unless you are playing in certain keys. Why? Want to be comfortable in every key? In this one hour video I show you my system for mastering harmonic devices such as scales and chords in all 12 keys. This is a time tested, proven method that I have used with my students for years and it works! It doesn’t matter what style you play. If you are constantly getting lost playing over changes and looking for a systematic approach for learning and memorizing scales and chords on the fretboard this video is for you. This system not only works for scales and chords but can be applied to arpeggios, interval training, and licks. You’ll also learn how to practice the harmonized scale or “chord scale” in all 12 keys. One of the chords that I show is a triadic 7th(no5) which was not shown in my Mastering Chords and Harmony video. This triad is used by Allan Holdsworth and I’m going to show you how to create a chord scale with it. Included with the video are transcription files in guitar tab and standard notation. These transcription files are in the PDF and Guitar Pro formats. Also included are neck diagrams, charts, and backing tracks to make learning easier and fun. You’ll also get to hear one of my newly unreleased guest solos at the end. If you are serious about becoming a better musician and guitarist let’s get started today! Click here to watch a video clip.

Once your order is placed you will be redirected to a link for the download version. You’ll also receive an email with the links to the downloads. Keep in mind I only offer customer service and support to customers who buy my products from me or authorized vendors.

7 reviews for 12 Key Mastery Download Version

  1. zoso@att.net
    5 out of 5


    Derryl has done it again! 12 Key Mastery is the coup de grace in the fight for fretboard dominance! This course provides the beginning player with the tools that will take years off the learning curve, deconvolutes the “classical” approach to learning theory that is often confusing (but essential), and gives a direct pathway to putting the concepts to immediate use. Together with GPS, 12 Key Mastery is the premier system to understanding and creating any style of music, not just showing you how to parrot a few cover tunes and leaving you wondering where to go next, like the majority of canned and tired instructional methods out there. I only wish I had this when I began playing. Derryl’s method of teaching is clear and straightforward and if you put in the time, you will own the guitar. Six out of five stars!

  2. christophe.coste@ymail.com
    5 out of 5

    (verified owner):

    Insane value for the money. We all know that we have to practice scales in all 12 keys….and I have to admit that I never truly did it. I always stay in 4 or 5 different keys.
    Here, Derryl take you by the hand and invite you for a REAL practice routine. It already helps my visualisation of the fretboard (more intervals oriented).
    So, I grab my guitar and go practice with Derryl…and you should do the same!!!

    Christophe from France

  3. brian.griner@comcast.net
    5 out of 5


    Derryl is a great instructor. He continues to impress me with his ability to take difficult material like mastering the fretboard in all keys and positions and makes it accessible to students at all levels. This series is really foundational if you want to be able to solo over changes and work through Derryl’s approach to playing like Allan Holdsworth. Great job on this video Derryl.

    Best regards, Brian

  4. alvino.john@gmail.com
    5 out of 5


    This is a concept I’ve been struggling with for years and Derryl made such an easy and comprehensive approach to the material. Since starting with this method I’m more confident changing keys during a solo all over the neck, which was one of my biggest goals when I started getting serious about guitar. I highly recommend this dvd to anyone who gets lost during chord changes. It will allow you to be able to visualize how to seamlessly transition between scales without having to stop and think about it. Great method from a great instructor.

  5. markt700@hotmail.com
    5 out of 5

    (verified owner):

    Just a quick review , this lesson is fantastic , opens up a host of pathways for learning keys and scale relationships plus modal shape relationships to keys … lovely stuff from a history maker in tuition material

  6. nickcronin0@gmail.com
    5 out of 5


    Derryl’s logical approach to APPLIED theory is nothing short of genius. This really opened up the fingerboard for me. Highly recommended!

  7. andre.p.louw@gmail.com
    5 out of 5

    (verified owner):

    Incredible DVD, Derryl explains an easy to understand system in 50 minutes that others try to explain with hundreds of diagrams. Derryl is an amazing player and teacher and I just now bought his DVD on chords and harmony, can’t wait to get to work.

Add a review