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KORG M3R V1.1: MIDI CC, NRPN and OSC map

The KORG M3R V1.1 as named OSC addresses — 6 CC, 58 SysEx commands — ready to use from Claude (MCP), SuperCollider, Sonic Pi, TouchDesigner or any OSC app via osc-bridge.

Device KORG M3R V1.1
Vendor KORG
OSC prefix /m3r_v1_1
Source 🎛️ Derived from an Electra One community preset
Revision per Electra preset
Upstream electra-preset
Driver file devices/korg/m3r_v1_1.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/korg/m3r_v1_1.json --out-port <N> --in-port <M>

Then send OSC to 127.0.0.1:7777, for example:

osc-bridge osc-send /m3r_v1_1/hold 63

From Claude or any MCP client, the osc-bridge mcp server exposes this driver as m3r_v1_1: ask “what can the KORG M3R V1.1 do?” and it reads this map with list_routes. See the MCP guide.

MIDI CC and NRPN parameters (6)

OSC address CC NRPN (MSB/LSB) Range Nature Section
/m3r_v1_1/hold 64 0–127 continuous
/m3r_v1_1/modwh_js_up_1 1 0–127 continuous
/m3r_v1_1/js_down_2 2 0–127 continuous
/m3r_v1_1/volume_7 7 0–127 continuous
/m3r_v1_1/rotary_sp_80 80 0–127 continuous
/m3r_v1_1/all_notes_off 127 0–127 continuous

SysEx commands (58)

OSC address Arguments
/m3r_v1_1/multisound val: u7
/m3r_v1_1/drum_kit val: u7
/m3r_v1_1/octave val: u7
/m3r_v1_1/assign val: u7
/m3r_v1_1/hold val: u7
/m3r_v1_1/osc_level val: u7
/m3r_v1_1/osc_type val: u7
/m3r_v1_1/mg1_wave val: u7
/m3r_v1_1/frequency val: u7
/m3r_v1_1/delay val: u7
/m3r_v1_1/mg1_intensity val: u7
/m3r_v1_1/key_sync val: u7
/m3r_v1_1/eg_lvl_v_sens val: u7
/m3r_v1_1/eg_time_v_sens val: u7
/m3r_v1_1/delay_start val: u7
/m3r_v1_1/attack_time val: u7
/m3r_v1_1/decay_time val: u7
/m3r_v1_1/release_time val: u7
/m3r_v1_1/start_level val: u7
/m3r_v1_1/attack_level val: u7
/m3r_v1_1/release_level val: u7
/m3r_v1_1/pb_pitch val: u7
/m3r_v1_1/at_pitch val: u7
/m3r_v1_1/pitch_mg val: u7
/m3r_v1_1/mg_freq val: u7
/m3r_v1_1/cutoff val: u7
/m3r_v1_1/attack val: u7
/m3r_v1_1/decay val: u7
/m3r_v1_1/slope_time val: u7
/m3r_v1_1/release val: u7
/m3r_v1_1/eg_intensity val: u7
/m3r_v1_1/breakpoint val: u7
/m3r_v1_1/sustain val: u7
/m3r_v1_1/cutoff_kbd_trk val: u7
/m3r_v1_1/eg_time_kb_trk val: u7
/m3r_v1_1/center_key val: u7
/m3r_v1_1/mg2_wave val: u7
/m3r_v1_1/mg2_intensity val: u7
/m3r_v1_1/pb_cutoff val: u7
/m3r_v1_1/at_cutoff val: u7
/m3r_v1_1/cutoff_mg val: u7
/m3r_v1_1/amp_lvl_v_sens val: u7
/m3r_v1_1/amp_kbd_trk val: u7
/m3r_v1_1/at_amp val: u7
/m3r_v1_1/vdf_eg_int val: u7
/m3r_v1_1/combi_type val: u7
/m3r_v1_1/program val: u7
/m3r_v1_1/pan val: u7
/m3r_v1_1/damper_filter val: u7
/m3r_v1_1/split_point val: u7
/m3r_v1_1/velocity_sw val: u7
/m3r_v1_1/level val: u7
/m3r_v1_1/interval val: u7
/m3r_v1_1/detune val: u7
/m3r_v1_1/keyzone_top val: u7
/m3r_v1_1/keyzone_bottom val: u7
/m3r_v1_1/velocity_high val: u7
/m3r_v1_1/velocity_low val: u7

Performance MIDI

Notes, pitch bend and any CC are also available: /m3r_v1_1/note/on <note> <velocity>, /m3r_v1_1/cc/<number> <value>, /m3r_v1_1/pitchbend <0-16383>, /m3r_v1_1/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.