Start with a named chord.
Change one thing.
The chord name, interval language, spiral, keyboard, and transformation chain update together. Between named chords, the nearest one stays visible as dashed steps.
CHROMATIC SPIRALC aligns with C · one step is one semitone
chord tone nearest chord differs
FORMULA1 · 3 · 5
DRAG OUT TO REMOVE
Drag a coloured tone to another step. Tap an empty step to add one. The ink ring marks the bass; dashed steps complete the nearest named chord.
NORMALIZED THEORY VIEW
C
MOVE SELECTED TONE
E
RE-ROOT / REINTERPRET
Declares a chord tone as the root. The keys stay put; the name is re-read — C6 with A as root becomes Am7.
BASS / INVERSION
Changes the lowest note, not the chord ingredients.
VOICING / SPACING
Changes octave placement and spacing, not the chord name.
TRANSFORMATION CHAIN
Only committed states appear here. Choose one to return to it.