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Music theory, explained without the jargon

Theory is a naming system for patterns that are already in the music you listen to. It is descriptive, not prescriptive, and none of it forbids you from playing anything.

Start with the first section if you are new. If you already read music and know your major scales, skip to chords and progressions, which is where theory starts paying off audibly.

Start here

Reading notation

Keys and the circle of fifths

Chords and progressions

Chord progressions by key

  • C major — Common patterns worked through.
  • A minor — Common patterns worked through.
  • E minor — Common patterns worked through.

AP Music Theory

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