Understand chords
Six short lessons linking an idea, a sound and a movement. With audio comparisons and explained quizzes.
Try the workshop →The music workshop · Free betaUnderstand a chord.
Understand a chord.
Play it. Make
it music.
Guitar, piano, sheet music: go from “which notes?” to “what can I play with them?”. A visual workshop for amateur musicians, right in your browser.
No account needed · Français / English · Desktop, tablet and mobile
One small idea.
Something real to play.
Build a progression
Build up to 16 bars, transpose, loop your music and share a progression with a simple link.
Try the workshop →Practise chord changes
Your microphone listens for major and minor chords. One goal at a time, without a countdown.
Try the workshop →Try improvising
Two notes, then three, then five: make up a phrase over a minor backing.
Try the workshop →Train your ears
Major or minor? Seventh or maj7? Listen, choose and discover the notes that make the difference.
Try the workshop →Find your rhythm
Metronome, subdivisions, tap tempo and strumming patterns to help you play steadily.
Try the workshop →Your musical references, togetherOne chord.
One chord.
Three ways to see it.
Explore guitar voicings with a capo, piano inversions and notes on a staff with different clefs. Switch freely between Do–Ré–Mi and C–D–E.
Open the explorer →Start with your instrument.
Tune your guitar with your microphone, then try chord detection. The last recognised chord stays visible with its notes and variants.
Audio is analysed in your browser. Recognition is experimental: play one chord at a time in a quiet place.
Open the tuner →The beta is free. Your feedback matters.
All the workshops shown are available during the beta, without a payment card. Tell us what helps, what gets in the way and what you would like to learn.
An additional paid offer may be considered after the beta. No paid subscription is offered today.
Before you play
Do I need to read music?
No. Start with the short lessons: each idea can be heard and practised. Staff notation is one of several views.
Do I need a microphone?
Only for the tuner, detection and recognition practice. Other workshops use sounds generated by your browser.
Where do my recordings go?
The application does not record or transmit your audio. The microphone stops when you leave its workshop. Preferences and some progress are saved on your device.
Can I use it with my teacher?
Yes. Prepare a progression, copy its link and share it yourself with your teacher. The link contains the chords and tempo.