— What it detects
chords
Beyond major & minor
Extended and altered chords, not just triads — 7ths, 9ths, sixths, sus, dim, aug, slash chords and more.
tempo · key
Beat and key
Tempo in BPM and the song's key, read straight off the audio.
views
Piano and guitar
Follow along on a keyboard or as fingered chord shapes — whichever you read faster.
practice
Built for practice
Capo and transpose, an A–B loop, 0.5–2× speed, and fix any chord by hand.
— Try one
Demo songs
Tracks we've already analysed — open one to explore the player.
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