musictheoryfordummies.com

Music theory.
Finally
explained.

Chords, scales, modes, intervals — every concept broken down so it actually makes sense. No conservatory required.

Triad C Major C · E · G
Interval Perfect 5th 7 semitones
Scale Dorian Mode W H W W W H W
Chord Cmaj7 C · E · G · B
Key G Major 1 sharp — F#

All topics

Everything you need. Nothing you don't.

01

Triad Chords

The foundation of harmony. Major, minor, diminished, augmented.

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02

Note Intervals

The distance between notes — the DNA of all melody and harmony.

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03

Seventh Chords

Add colour and sophistication to your playing instantly.

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04

Major Scale

The most important scale in Western music. Master this first.

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05

Minor Scale

Three variations. One emotional core. Essential for every genre.

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06

Modes

Ionian to Locrian — seven flavours built from one scale.

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07

Pentatonic Scale

Five notes. Infinite possibilities. The guitarist's best friend.

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08

Circle of Fifths

One diagram that unlocks every key relationship in music.

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09

Chord Progressions

Why certain chords want to follow others — and how to use that.

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10

Key Signatures

Sharps, flats, and how to read any key at a glance.

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11

Blues Scale

The backbone of rock, jazz, and blues. Six notes, endless soul.

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12

Mode Chords

Build chords from any mode. Unlock new harmonic territory.

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