Music theory is just names for things you can already hear. These five short lessons explain them with everyday examples, and every example plays on a real piano sound. Start at the top and go in order, or jump to what you need.
Reviewed 7 October 2026
Each lesson takes about ten minutes. You do not need an instrument: a phone is enough.
Piano sound: Salamander Grand Piano by Alexander Holm (CC BY 3.0).
Sowlea