01 / 03
Correct spelling, always
No more "Em♯5" when it's "C/E". No more "A♯ C♯" when the key calls for "B♭ D♭". Built on jazz harmony conventions — chord names written the way your teacher actually writes them on the board.
In closed beta
Chord detection that finally speaks your musical language.
Magic Chords reads what you play with correct spelling, shows what fits the key, and runs in your browser with a quality piano sound built in. No DAW. No plugin chain. Just play.
Magic Chords
Cmaj7I — tonic
Key · C major
Diatonic chords● Modal · ● V/x
ICmaj7iiDm7iiiEm7IVFmaj7VG7viAm7vii°Bm7♭5
A7B7D7E7
◆ Demo
See it in motion
Real-time chord detection with key-aware harmonic palette and synced multi-view.
Magic Chords
Cmaj7I — tonic
Key · C major
Diatonic chords● Modal · ● V/x
ICmaj7iiDm7iiiEm7IVFmaj7VG7viAm7vii°Bm7♭5
A7B7D7E7
Stylized schematic — real screen recording replaces this in Phase 3.
◆ Why it's different
Why it's different
02 / 03
Key-aware harmonic palette
Pick any key — major or minor — and instantly see the diatonic chords. Toggle modal borrowings, secondary dominants, tritone subs. Working in Fm? Stop Googling, start writing.
03 / 03
Pro piano sound, zero setup
Plug in one or more MIDI controllers, pick a high-quality piano voice, and play. Latency ≤ 50 ms — no DAW or virtual-instrument plugin needed. No keyboard? Computer keys become piano keys.
◆ Multi-view
Five views, synced
The same chord, simultaneously read in five musical languages — each toggleable so guitarists hide staff, pianists hide fretboard, producers expose piano roll.
Name & function
Chord symbol plus harmonic function in the current key.
Piano
Lit keys for the voicing you just played.
Staff
Notation with correct enharmonic spelling.
Fretboard
Common shapes for guitar.
Piano roll
Read-only voicing plus your last few bars of MIDI input.
◆ Who it's for
Who it's for
Music & theory students
The first app that doesn't fight what your teacher taught. Hear, see, and read the chord all at once — name, function, piano, staff, fretboard.
Producers in flow
Don't open Google to remember what borrows into Fm. Stay in the session — the palette is right there.
Composers & songwriters
See available secondary dominants and modal borrowings without firing up notation software. Audition ideas instantly with the piano voice.
Guitarists & string players
Make sense of the piano side of music. Play a shape, read the name, see it on the staff — the bridge between instruments.
Teachers — classroom and online
Show the same chord in five musical languages at once. Students see piano, staff, function, and fretboard side by side — no slide deck required.
Pianists in practice
Quality piano sound on tap, multi-MIDI controller support, the diatonic and borrowed palette in view. Learn to improvise inside a key without leaving the keyboard.
◆ What it isn't
What it isn't
- Not a DAW — no tracks, no mixer, no plugin slots.
- Not audio detection — input is MIDI or computer keyboard.
- Not a sequencer — the focus is the chord right now.
- Not an editor — piano roll is read-only.
Closed beta
Availability
Magic Chords is currently in invite-only beta. Comped licenses for active Curson students; paid plan launches alongside public release.
Want in? Request a beta invite below — we review weekly.
Ready to stop guessing?
Request a beta invite. We'll send your sign-in link by email.