Music Theory Lessons
Short, interactive lessons on the fundamentals, reading music, scales and harmony — each one playable on a keyboard as you read.
Latest lesson
Is Music Theory Still Worth Learning Now That AI Can Write Songs?
AI now knows music theory better than most students — and that is exactly why you still need it. What a prompt cannot buy you, and what you have to be able to hear.
Lessons
By topic
Fundamentals, reading music, scales and harmony, from beginner to advanced. Each card names its topic and its level.
Musical Notes
What a note is, why the octave repeats, and how twelve of them make the whole system.
Reading Sheet Music Fast
Landmark notes and pattern reading, so the staff stops being a lookup table.
Why Scales Matter
A scale is the set of notes a song draws from. Know it, and the melody makes sense.
Modes: Dorian, Lydian, Mixolydian
Three modes, one formula each, and a famous song that shows what each one sounds like.
The Circle of Fifths
How to read the circle, and how it hands you key signatures and chord changes.
Negative Harmony
Flip a progression around its axis and hear what the mirror image sounds like.
Want the whole picture?
The course is the long road: the same ideas built up chapter by chapter, from pitch and rhythm to form and style, with exercises along the way.