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Music belongs to everyone.
Learn to hear what makes music move, with short lessons and games you can play right here. Free, forever.
A note is never just one sound. Like white light through a prism, it opens into overtones, and that hidden spectrum is where harmony comes from. Harmony Gym is here so anyone can learn to hear it.
Free, for good
No paywall and no account. Your progress stays on your device.
By ear, then by name
Every idea is heard before it is named, so theory sticks to sound.
In your language
Ten languages, written for people who are just starting.
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Tap it — it works, and so does the sound.