Keys Unlocked!: Pocket-sized Book

Coker doesn't just show you fingerings across all twelve keys; he articulates the underlying reasons why keyboard facility matters for improvisation at an advanced level. The pocket format makes this the kind of reference guide your students will actually carry and consult between rehearsals, turning idle moments into deliberate practice time.

The confidence that comes with fluency. Moving through a tune in any key feels natural rather than forced; your harmonic understanding deepens as technical facility catches up with musical intention.

This book serves intermediate and advanced jazz musicians who are ready to remove the limitations that come from being comfortable in only a few keys. It's essential for anyone pursuing jazz improvisation seriously, whether you play saxophone, trumpet, trombone, piano, bass, or any other instrument.

• Work through one key thoroughly before moving to the next. Rushing through all twelve defeats the purpose; depth in each center builds real muscle memory and harmonic awareness.
• Apply what you learn here directly to tunes you're already working on. Play a standard you know well in different keys to feel how the material translates to actual playing situations.
• Use this alongside recordings of soloists working across keys. Hearing how professionals navigate the same material reinforces what the book teaches.

Hand this to students preparing for jazz combos, big band solos, or ensemble settings where transposition isn't optional. Use it as a summer assignment for musicians stepping up to advanced improvisation levels; the pocket size means they can work through it anywhere.

• Playing fluently in all twelve keys
• Understanding the harmonic rationale for practicing across all centers
• Building consistent fingering patterns across transpositions
• Strengthening confidence in improvisation outside familiar key areas
• Developing the systematic practice habits required for advanced jazz study