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Ableton BeatRepeat: MIDI CC, NRPN and OSC map

The Ableton BeatRepeat as named OSC addresses — 18 CC — ready to use from Claude (MCP), SuperCollider, Sonic Pi, TouchDesigner or any OSC app via osc-bridge.

Device Ableton BeatRepeat
Vendor Ableton
OSC prefix /beatrepeat
Source 🎛️ Derived from an Electra One community preset
Revision per Electra preset
Upstream electra-preset
Driver file devices/ableton/beatrepeat.json

Not tested on the device yet

This driver comes from documentation or community data and has not been checked on real hardware. If you own one, a quick test and a pull request promoting it helps everyone — see CONTRIBUTING.

How do you control it?

Find the MIDI ports, then start the bridge with this driver:

osc-bridge detect        # prints the ready-to-run line for what is plugged in
osc-bridge run --device devices/ableton/beatrepeat.json --out-port <N> --in-port <M>

Then send OSC to 127.0.0.1:7777, for example:

osc-bridge osc-send /beatrepeat/interval 3

From Claude or any MCP client, the osc-bridge mcp server exposes this driver as beatrepeat: ask “what can the Ableton BeatRepeat do?” and it reads this map with list_routes. See the MCP guide.

MIDI CC and NRPN parameters (18)

OSC address CC NRPN (MSB/LSB) Range Nature Section
/beatrepeat/interval 6 0–7 continuous
/beatrepeat/offset 7 0–15 continuous
/beatrepeat/grid 5 0–15 continuous
/beatrepeat/variation 16 0–10 continuous
/beatrepeat/filter_freq 2 / 34 0–16383 continuous
/beatrepeat/filter_width 3 / 35 50–900 continuous
/beatrepeat/chance 0 / 32 0–1000 continuous
/beatrepeat/gate 4 0–18 continuous
/beatrepeat/block_triplets 10 0–127 continuous
/beatrepeat/variation_type 17 0–127 continuous
/beatrepeat/filter_on 12 0–127 continuous
/beatrepeat/repeat 15 0–127 continuous
/beatrepeat/pitch 14 0–12 continuous
/beatrepeat/pitch_decay 8 / 40 0–1000 continuous
/beatrepeat/mix_type 13 0–127 continuous
/beatrepeat/volume 9 / 41 0–16383 continuous
/beatrepeat/decay 1 / 33 0–1000 continuous
/beatrepeat/device_on 11 0–127 continuous

Performance MIDI

Notes, pitch bend and any CC are also available: /beatrepeat/note/on <note> <velocity>, /beatrepeat/cc/<number> <value>, /beatrepeat/pitchbend <0-16383>, /beatrepeat/program_change <n>.

Limitations

Imported from an Electra One community preset. The mapping reflects the preset author's editorial choices: parameter naming, ranges, and which params are exposed. Untested on hardware in this repo.