Tools that plug into your workflow

Intervals, chord qualities, scales & modes, and short progressions - with tempo, note count, and ascending/descending controls plus tracked accuracy.

Plug in a USB MIDI keyboard - see notes light up in real time, hear them played back, and use it in ear-training exercises.

Drop in an audio snippet (WAV/MP3). Get an estimated key, BPM, and a starting chord palette that fits.

Pick any scale in any key - instantly see and hear the diatonic chords, sevenths, and common substitutions.

Sketch progressions on a timeline, hear them played by a real grand piano, and export MIDI straight into your DAW.

Lo-fi, House, and Cinematic signature progressions with tempo, voicings and audio previews - same theory, genre-tuned examples.

Measure your audio round-trip and auto-tune Tone.js scheduling so key presses sound instant across headphones, bluetooth, and DAWs.