Everything runs locally on your device and nothing is sent anywhere. This is an open-source demo, not a service.
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MVTAriaPOS--:--SPD1×SRCBuilt-in
Press play and follow the keys
Press play and follow the lit keys as the notes fall onto them. Slow a passage down to learn it without changing pitch, then switch on game mode and connect a MIDI keyboard to be scored on your timing. The piano is rendered in your browser.
libsonare's built-in engine renders the score to audio on-device — nothing uploaded. Slow any passage down without changing pitch, and switch between the synthesized and sampled piano on the fly.
Score0
100.0%Accuracy
LIBSONAREPreparing the piano…Rendering this movement on-device — no upload.
Movementi
Web MIDI is not available in this browser
Speedi
Soundi
Piece
J.S. Bach · Goldberg Variations · BWV 988 · Aria
Notes
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Length
0:00
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Tempo
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Music: Goldberg Variations (BWV 988), public-domain transcription. Piano: libsonare built-in synth, or a public-domain SoundFont.