AXIS GEMINA
Touch the geometry of music.
A new iPad instrument where scales, chords and patterns become playable shapes.
Built on musical symmetry. Designed for touch. Made to play.
What is Axis Gemina?
Axis Gemina is a geometric MIDI instrument for iPad. Instead of arranging notes like a piano keyboard or a grid of pads, it projects musical relationships into playable spaces.
Touch a scale, trace a chord, rotate a pattern, or explore harmony through shapes.
Playable geometries
The same musical engine can be projected through different geometries. Each layout reveals a different way to see and play the chromatic system.
Twenty-four nodes in paired rings — harmony as a field you can walk through.
A continuous chromatic spiral where pitch class becomes angle and register becomes motion.
Tangent circles and rosettes — overlapping fields that reveal interval layers.
Nested hexagonal rings — the classic axial layout, refined for touch.
Why it feels different
Axis Gemina turns musical structure into touchable form. Notes are not just buttons: they belong to fields, symmetries and paths.
The two colors are not decoration: they reveal the twin whole-tone families hidden inside the chromatic scale. Moving between colors means crossing a semitone.
- Overlapping circular fields — relationships you can see before you play them.
- Cyan and magenta twin structures — two interlocked whole-tone families on the stage.
- Scales as visible shapes — lock a mode and the geometry lights up under your fingers.
- Chords as spatial forms — trace a voicing and hear it as a figure on the grid.
- Gestures as motion — rotate rings, sweep spirals, turn patterns into performance.
MIDI workflow
Use Axis Gemina as a performance surface or MIDI controller for your favorite synths, DAWs and sound modules.
From research to instrument
Axis Gemina grew from years of exploring a question that traditional instruments rarely make visible: what if harmony could be understood through symmetry?
The piano contains hidden geometric relationships, but the tonic is not always the true center of symmetry of a scale, and tritones can act as hinges between opposite tonal poles.
Axis Gemina turns those relationships into a playable iPad instrument — the first public expression of a broader research project into musical geometry, interval maps and three-dimensional harmonic spaces.
AI-assisted creative coding tools helped move years of sketches and theory into something you can touch, test, refine and play.
Join the beta
Be among the first to play the beta and help shape a new geometric instrument for iPad.
Axis Gemina is in active development — your feedback shapes the instrument before public release.
TestFlight · iPad · One email when your invite is ready
Already invited? Open TestFlight
A glimpse under the surface
The instrument is built to be played first — the deeper relationships reveal themselves as you touch it.