Music theory taught through
the composers you love.

An open music-theory textbook where every harmony example comes from real repertoire — pick your favorite composers and the examples become theirs.

  1. Pick your favorite composers — Bach, Chopin, Beethoven, and more.
  2. Open any harmony lesson — 108 chapters across 11 units.
  3. The musical examples are theirs — notation you can hear, drawn from annotated scores.

Start by picking your favorite composers

Your favorite composers
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I Fundamentals

II Counterpoint and Galant Schemas

III Form

IV Diatonic Harmony, Tonicization, and Modulation

V Chromaticism

VI Jazz

VII Popular Music

VIII 20th- and 21st-Century Techniques

IX Twelve-Tone Music

X Orchestration

XI Rhythm and Meter