Open Keys [WiN] — Free Download

Audio plugins and instruments

Open Keys is a probabilistic MIDI mapper that transforms incoming notes according to customizable key, scale, and randomness settings.

Audio plugins and instruments

Open Keys [WiN] preview — Open Keys [WiN]

About Open Keys [WiN]

Operating within VST3 and AU hosts, Open Keys remaps each incoming MIDI note to a new pitch using a rules engine. Users define the key and scale, then adjust five percentage parameters—Drift, Chaos, Scale Chaos, Unison, and Scale Unison—to shape the degree of variation and tonal cohesion of the output.

Best for

Live performance or studio setups needing dynamic, rule‑based MIDI note variation.

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