The Protean Chord For Jazz Guitar

🎸 Introducing The Protean Chord For Jazz Guitar — A New Pathway Into Modern Harmony

After years of teaching, performing and exploring the intricate landscape of jazz guitar harmony and following his highly praised 2021 book “Upper Voicings, Synonyms and Slash Voicings”, GMI CEO Ged Brockie has just released new book: The Protean Chord For Jazz Guitar — published by GMI – Guitar & Music Institute.

This book is born from a simple yet powerful idea:

What if the chords and melodic ideas you already know could be transformed into countless new harmonic possibilities?

The Protean Chord approach is a method for doing exactly that — a system for reshaping familiar material and using it in fresh, modern, and creative ways. It’s less about learning more chords, and more about learning to reuse what you know with freedom, confidence and musical imagination.

Why This Book?

Traditional jazz harmony resources often focus on new shapes, extended theory, or endless voicings. This book digs deeper — into the conceptual framework that allows you to:

• Adapt chord forms and lines into new musical settings
• Build modern-sounding progressions from new and everyday shapes
• Unlock melodic and harmonic fluidity across the fretboard
• Develop personal vocabulary based on your existing knowledge

Whether you’re an improviser, a composer, or a curious harmonic explorer, The Protean Chord aims to spark new thinking and open new doors in your playing.

What’s Inside?

🟦 206 pages of deep but practical instruction
🟦 Step-by-step exercises to internalise the concept
🟦 Applications to real musical examples and contexts
🟦 Ideas for improvisation, composition & chord-melody playing

And — because learning should be experienced, not just read — every copy includes an extensive digital resource package with:

• 28 MP4 demonstration videos
• 218 MP3 files — theory, demos, backing tracks at multiple tempos
• 18 MIDI files
• Over five hours of guided instruction and audio support

Who Is It For?

✔ Intermediate and advanced guitarists
✔ Players wanting modern harmony tools
✔ Students of jazz improvisation
✔ Guitarists looking to expand creative vocabulary
✔ Teachers seeking fresh approaches for students

If you’ve ever felt that you know a lot of chords but aren’t using them to their full potential, or you’re not using your single line ideas in the most creative way, then this book may be the breakthrough you’ve been waiting for.

Start Your Protean Journey

The Protean Chord is not just a book — it’s a method, a mindset, a way of unlocking new sounds from the shapes already under your fingers. I’m incredibly proud of what this work has grown into, and I hope it inspires players the way developing this concept has inspired me.

👉 Available now from GMI Online Store & Amazon worldwide

Here’s to new sounds, new ideas, and the joy of discovery on the guitar.

– Ged Brockie
GMI Founder & Author of The Protean Chord For Jazz Guitar