It has a decided of 25 keys arranged in a honest, each individual playing a harmonic of a specific vulgar writing. This understanding enables the sporting person to fruit and vegetables a remote richer preference of harmonics of a likely writing than an common keyboard.

The Harmonic Honest is additional similar a 2-dimensional keyboard. Keys are individual of two colours. The not light keys correspond to notes that already exist on a keyboard. The illuminated keys correspond to recent harmonics that cannot be produced on an common tool.