EP Drum Computer OXO

Free WebMIDI pattern and chord sequencer that drives the EP-133, EP-1320 and EP-40

EP Drum Computer OXO WebMIDI sequencer interface
EP Drum Computer OXO.© bryanlabchuk
Works with
  • Browser with Web MIDI
  • EP device connected over USB with MIDI clock set to IN

About

A free browser sequencer for the EP series. Connect an EP-133, EP-1320 or EP-40 over USB, set the device's MIDI clock to "in", and it drives the pads from premade, customisable drum patterns (1 to 128 bars, with swing and humanise) and generates chords, with per-pad note, gate and velocity settings. Themes match each EP model, and there's a night mode.

Devices
Platforms
Web
Pricing
free
Last verified
Oct 18, 2026
Source: Reddit