Harmony Cloud

Don't practice in silence.

Most ear training feels dead with boring, rote exercises. Harmony Cloud puts another musician in the room with you, bringing life to your practice sessions.

Never mechanical, always surprising.

Download on the App Store
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Train Your Ears

Practice identifying chords and progressions with exercises that adapt to your skill level.

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Learn from a Master

Watch exclusive video lessons where Stefon Harris reveals how chords create emotion.

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Explore Improvisation

Fearlessly experiment over endless chord progressions that challenge and inspire your creativity.

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Track Your Growth

Monitor your progress as you develop from recognizing basic triads to hearing complex voicings fluently.

Like having a piano player
in the practice room

Real music, without AI. Our proprietary, human-crafted algorithm creates chord progressions that breathe and flow like live musicβ€”never mechanical, always surprising.
Built by musicians, for musicians. Stefon Harris didn't just lend his name. He poured decades of performance and teaching wisdom into every note.
Learn harmony by feeling it. Skip the theory homework. Jump straight into the emotional heart of music and let your ears guide you.

What Musicians Are Saying

β€œMy ability to hear certain things more clearly is helping to allow me to simultaneously pay attention to more details in music that I previously overlooked. Highly recommended!”

Philip DizackTrumpeter & Educator

β€œThere is no tool that has such a scope of harmonic possibilities in its engine, while also handling the progressions in a musical way. There is no equivalent digital music learning tool out there.”

Oliver GlynnPianist

β€œThis app is amazing. I wish I hadn't waited so long to dig in. It would've helped so many of my students. I'm making this a regular part of my teaching from here on out.”