The Isomorphic Advantage

Hex MIDI is a professional digital instrument that leverages the power of isomorphic keyboard layouts. Unlike a standard piano, Hex MIDI uses a consistent geometric grid where every musical interval maintains its shape, regardless of the key you are playing in.

Beginner Friendly

Visualize music theory instantly. Learn one chord shape or scale pattern, and play it in all 12 keys without relearning fingerings. Perfect for rapid learning and intuitive composition.

Professional Power

Expand your reach. The hexagonal grid enables intervals exceeding two octaves with a single hand. Connect to DAWs like Ableton or Logic Pro via Full MIDI I/O support.

Supported Isomorphic Systems

• Wicki-Hayden: Theoretical perfection for diatonic and chromatic harmony.
• Jankó (Classic & Vertical): The legendary 19th-century ergonomic layout.
• Harmonic Table: Best-in-class for triad and harmonic visualization.
• Fourths (Guitar): A familiar grid for guitarists and bassists.
• Chromatic C-System: The standard for classical button accordions.