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Understanding Intervals

The foundation of music theory

Learn all musical intervals — from seconds to thirteenths. Understand how chords are built from the ground up.

Beginner 0%

Thirds & Tritone

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Major & Minor 3rd Major vs. minor — the defining difference
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The Tritone 6 semitones — the tension in dominant chords

Fifths & Sixths

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The Perfect 5th 7 semitones — stable and open
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Diminished & Augmented 5th ♭5 and #5 — the color tones
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The Major 6th 9 semitones — warmth and openness

Sevenths

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The Minor 7th 10 semitones — blues & dominant sound
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The Major 7th 11 semitones — bright and modern

Extended Intervals

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The 9th 14 semitones — color above the octave
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11th & 13th The upper extensions