Polymeter is a MIDI sequencer for music that's in multiple prime meters (2, 3, 5, 7, 11, etc.) simultaneously. Each track has its own loop length, and when the lengths differ, the tracks "slip" (or shift phase) relative to each other. The resulting interference pattern is sufficiently intricate that variations similar to the embellishments of a live performer can be generated algorithmically.

The current software is based on software I developed in the 1990s in order to compose polymeter electronic dance music. I'm rescuing from bit rot what might be (for all I know) the world's only sequencer optimized for polymeter. It's a long battle, but it's worth it to be able to compose complex polymeter again.

News

August 29, 2024

Version 1.0.16 adds duplicate note prevention. It's available for download; for details, check the release notes.

January 24, 2024

Version 1.0.15 adds a targets pane to the modulations bar.

December 25, 2023

Version 1.0.14 adds internal tracks for controlling sustain, sostenuto, and more.

September 20, 2023

Version 1.0.13 finally fully supports Unicode!

December 26, 2022

Version 1.0.12 lets you specify step duration as a fraction of a whole note instead of in ticks.

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