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Theory

This section gathers the music-theory foundation and the full scales branch so the conceptual background and spelling-sensitive examples live together.

Choose a theory path

Use Basic Music Theory for the conceptual foundation, then continue into Scales for the spelling-sensitive examples and full comparison pages.

Basic Music Theory

Circle of fifths, key signatures, relative major/minor relationships, and enharmonic spelling essentials.

Open Basic Music Theory

Scales in SingLet

Major and minor scale pages organized for quick comparison and deeper browsing.

Open Scales in SingLet