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    Fourths HubMusic Theory Tools
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P4Fourths Hub

Blog

Thoughts on fourths tuning, music theory, and building tools for guitarists.

March 16, 2026

The Diagonals of Tension

How fourths tuning makes scale tension visible on the fretboard -two diagonal lines that reveal the deep structure of harmony.

March 15, 2026

Why Fourths Tuning?

A mathematical and practical case for why all-fourths tuning is the optimal guitar tuning -and why you should consider switching.

July 23, 2024

Keith Bromley Chord Book - Fourths Tuning

A great resource for chord voicings in fourths tuning, written by Keith Bromley.

July 21, 2024

Welcome To Fourths Hub

An introduction to Fourths Hub, its purpose, and what you can expect to find here.