Play whatever notes you want. Only timbre (knob settings etc.) is considered for scoring
Use the on-screen keyboard or your computer keyboard to play notes
'Z' and 'X' can be used to change octave.
Disclaimer
This is a fan-made emulator. It is in no way produced by, associated with, or endorsed by Korg Inc. or any related business entities. It's made out of appreciation for the actual product, which sounds way better, and I suggest you pick one up and find out for yourself!
Note
Slide
Active Step
How to play
Welcome to Mystery Patch, the game where you recreate a synth patch by ear. To start, click the 'Hear Mystery Patch' button and use your computer keyboard or the synths keyboard display to play notes. This will start a two minute timer. Recreate the patch as closely as you can.
Accuracy is measured by parameter values: octave and musical notes are irrelevant.
The game is over when time is up or you click "I'm done". Good luck!
Results
Param
Correct value
Your value
Accuracy (%)
Share your results
🎉 Ten Years of VolcaShare
Thursday, March 12, 2026
The VolcaShare code repository was unceremoniously created ten years ago, on March 12, 2016.
Since then, it's grown from an experimental Volca Bass patch database using WebMIDI into a
home for Volca Keys patches and browser-based emulators too.
To celebrate the ten years, I'm introducing something fun:
Mystery Patch,a daily challenge where you recreate a hidden synth patch by ear.
Thanks for popping in, checking out the patches, sharing your own, and playing with the emulators.
Sean
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