Play Harmony Like a Stenographer

Show HN: Play Harmony Like a Stenographer

Play Harmony Like a Stenographer operates in show hn launch.

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I made a musical instrument called the Harmonic Keyboard. It lets you express harmony declaratively—you choose where you want to go harmonically, and it figures out the individual notes and how to move between them.The interface is inspired by stenography: you press up to three keys simultaneously, each controlling one axis—bass note, chord quality, and inversion. With just three fingers, you can access over 500 chords.Transitions between chords are automatically voice-led: notes move minimally and musically from one chord to the next. Under the hood, the system selects voicings by minimizing the Wasserstein distance between the previous and next chord—subject to the constraint that all requ

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Website: harmonic-keyboard.com