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Euclid Rhythm Generator

Gate Sequencer
Robotic Bean AB

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What if you had a device that could bring more variation to your rhythm tracks? That could inspire you to take your songs and arrangements in new directions? That would always be in time with your music, no matter how much you automated and modulated it?

Meet Euclid Rhythm Generator, the first Euclidean gate sequencer for Reason! It's based on an ancient mathematical algorithm, but you don't need a maths degree to use it — Just plug it into a gate input on your favourite sound source and start tweaking!

  • Category: Utilities
  • Released: 2015-10-13
  • Version: 1.2.0
  • Rating: 4.3

Product details

Euclid is rhythmical inspiration in a box, a constant source of surprises and happy accidents for your productions. It may seem simple on the surface, but once you get to know it you’ll find out how deep it really goes!

By automating and modulating its parameters you can create endless variations of your rhythm tracks. You can generate complex polymetric patterns by setting odd pattern lengths, or even create true polyrhythms like 1/5 over 1/3.

Euclid comes with a big interactive display that visualizes your patterns in real time, including gate width, velocities, mutes, shuffle amount and current play position. You can draw mutes and velocities directly in the display, dragging across several steps at a time if you want. And the parameter values shown in the display are always up to date, even taking CV modulation into account!

Modular madness

The clock input allows you to slave Euclid to almost anything, for example Reason’s built-in pattern devices. Or why not connect it to an LFO or another Euclid pattern? And the pitch output is really convenient when you want to trigger a specific key on a sampler, or play simple arpeggios.

The mute input looks simple on the surface, but it opens up a ton of new possibilities! The simplest use is to prevent one Euclid pattern from coinciding with another, but you can find various other creative uses for it as well, for instance by combining it with the inverse gate outputs.


  • Euclidean gate sequencer with up to 32 steps
  • Always in sync with the song at selectable resolution
  • Can be modulated on the fly without hiccups
  • Interactive real-time graphical display
  • Four different gate outputs with unique variations
  • Reset input and output sockets, quantized to resolution
  • Individual mute buttons for each step
  • Almost everything can be automated and modulated
  • Shuffle and slide controls, ReGroove compatible

New in 1.1.0:

  • Pitch CV output, controlled by knob or MIDI notes
  • Individual velocities for each step
  • Clock CV input
  • Reset and Clock Thru outputs for easy chaining
  • Full Remote support, including mutes and velocities
  • Additional 1/8 and 1/4 shuffle modes
  • Draggable end marker to change Steps amount
  • Polyrhythmic Mode adds new resolutions (1/1 - 1/16)
  • New algorithm with slightly different pattern rotations

New in 1.1.1:

  • Mute CV input (with Thru output)
  • New Offset control for more precise adjustments
  • Improved display graphics
  • Minor tweaks and bug fixes

New in 1.2.0:

  • Now you can automate everything in Euclid, including individual mutes and velocities!
  • All Thru CV connections now double as Outputs when nothing is connected to their inputs
  • Bug fixes

Download the User Guide