Music theory you can hear and use

Interactive lessons on notes, chords, and progressions for producers and keyboard learners.

Chord type

A C major chord has three notes: C, E, and G. Try Minor to hear the middle note change.

Course

Module 18 lessons

Musical foundations

Find notes on the keyboard, then build and name the simple intervals between notes.

Module 29 lessons

Scales and keys

Build major and minor pitch collections, think in scale degrees, and move musical ideas between keys.

Module 38 lessons

Chords and voicings

Construct chords from intervals, read common symbols, and reshape chord tones across the keyboard.

Module 49 lessons

Harmony and progressions

Connect chords inside a key, hear their functions, build cadences and progressions, and move voices smoothly.

Module 54 lessons

Sevenths and ninths

Use seventh chords in familiar progressions, connect their voices, and add ninths to a phrase.

Learn the relationship
See the idea on a playable keyboard, then hear how the notes work together.
Apply it yourself
Build intervals, chords, and progressions by changing and playing the notes.
Check your understanding
Answer a short check and get feedback that explains the musical result.
Review what matters
Completed lessons, due reviews, and recent mistakes shape your next practice set.