Manual · Part I · The engine
Chord vocabulary, spelling and the traps
Which chord qualities the hosted API, the JavaScript engine and the C++ port agree on, how a symbol is parsed and spelled, what key accepts, and the one failure that is silent.
Updated Oct 2, 2026
Sign in to read
Free. Sign in with the email you use for your key.
Sign in to read →
Same email, same sign-in link as your API key. No card.
Next
On the pedal: fitting the engine in 1.333 ms →
The Elk Stomp measurements: five harmony voices plus chord intelligence inside the audio callback, the three builds it took to get there, and the six disciplines that made the numbers trustworthy.