OR-1 MIDI Sequencer
MIDI sequencer, no synth
About
This application acts as a generative MIDI Note-FX, controlling external synths, samplers, and drum machines. It offers advanced features like Euclidean and polyrhythmic sequencing, stochastic drift, and scale quantization with chord lock. Designed for musicians to create complex MIDI patterns without generating sound itself.
What's New in OR
1.1.1
August 28, 2026
Fixes a bug that prevented OR-1 from opening in Ableton Live and other hosts — the plug-in identified itself as an audio effect rather than an instrument, so hosts refused to load it on a track. Fixes the plug-in interface becoming unresponsive when hosted in AUM and other AUv3 hosts, which previously required restarting the host app. The interface now scales to fit the host's panel, so every control is reachable without scrolling. Parameter values now display in readable units — Drift, Gate and Level as percentages, modulator Rate in Hz. Note: OR-1 is a MIDI sequencer. It generates MIDI to drive your own instruments and produces no sound on its own.
MoreFAQ
Does OR-1 make any sound on its own?
No, OR-1 is a generative MIDI Note-FX and does not produce any sound itself. It functions as the 'brain' to control your external synths, samplers, and drum machines.
What kind of music creation features does OR-1 offer?
OR-1 supports Euclidean and polyrhythmic sequencing, stochastic drift, modulators, scale quantization with chord lock, and tempo/random controls for performance.
What devices is OR-1 compatible with?
OR-1 is currently supported on iPad devices.
How often is OR-1 updated?
The latest version, 1.1.1, was released on August 28, 2026, indicating recent development activity. The initial release was on August 16, 2026.
What is the age rating for OR-1?
OR-1 has an age rating of 4+, making it suitable for a wide range of users.
Does OR-1 have ads?
No, OR-1 does not contain advertisements.
What is the user sentiment for OR-1?
OR-1 has received overwhelmingly positive feedback, with an average rating of 5.0 stars from 7 ratings.
Can OR-1 learn MIDI messages?
Yes, OR-1 features MIDI Learn functionality, allowing it to learn MIDI messages for enhanced control.