Theory Lessons

Understand why music works

Theory is the organized language musicians use to describe patterns they can hear and play.

Module 1: Foundations

Half steps, whole steps, the major scale, stacking 1–3–5, and four essential triad types.

Open Module 1

Module 2: Diatonic Harmony

See the seven chords in every major key, their Roman numerals, functions, and common progressions.

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Circle of Fourths

Use the circle to understand key relationships, dominant motion, and chord progressions.

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