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Theory · Section index
Piano theory
Every article here stands alone. You don’t need to read them in order, and you don’t need to read them all. If you’re new, the five below cover most of what a beginner actually needs.
Start here
Five short articles, in the order a teacher would give them to you.
Finished these five? You know enough to use any entry in the chord and scale reference. Everything below is optional depth, there when a question sends you looking.
Two guided series
When you want the full story, these read like short books: a chapter at a time, in order. Each chapter ends where the next begins.
Series · Seven chapters
Chord Mastery
From three notes to altered harmony.
Series · Seven chapters
Scale Mastery
From the major scale to the exotic ones.
The complete index
Every theory article on the site, grouped by topic. Open it when you’re looking for something specific.