AS Music Theory
Music theory, made intuitive
Learn the language of music: concepts, intervals and chords you can see, hear and play.
Everything you need to learn
A hands-on way to understand how music works.
Concepts
Clear, structured explanations of music theory, from the fundamentals to advanced ideas.
Intervals & Chords
See how notes combine into intervals, scales and chords, with interactive examples.
Play & Listen
Hear every concept on real instruments. Choose your sound and play along.
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1 C
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2 C
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3 C
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4 C
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5 C
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6 C
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7 C
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8 C
A♯B♭
C♯D♭
D♯E♭
F♯G♭
G♯A♭
A♯B♭
C♯D♭
D♯E♭
F♯G♭
G♯A♭
A♯B♭
C♯D♭
D♯E♭
F♯G♭
G♯A♭
A♯B♭
C♯D♭
D♯E♭
F♯G♭
G♯A♭
A♯B♭
C♯D♭
D♯E♭
F♯G♭
G♯A♭
A♯B♭
C♯D♭
D♯E♭
F♯G♭
G♯A♭
A♯B♭
C♯D♭
D♯E♭
F♯G♭
G♯A♭
A♯B♭