Kurzweil K2661: MIDI CC, NRPN and OSC map¶
The Kurzweil K2661 as named OSC addresses — 28 CC — ready to use from Claude (MCP), SuperCollider, Sonic Pi, TouchDesigner or any OSC app via osc-bridge.
| Device | Kurzweil K2661 |
|---|---|
| Vendor | Kurzweil |
| OSC prefix | /k2661 |
| Source | 📦 Derived from MIDI Guide (community CC/NRPN data) |
| Firmware | unknown |
| Revision | per pencilresearch canonical CSV |
| Upstream | pencilresearch |
| Data licence | CC-BY-SA-4.0 — MIDI Guide (https://midi.guide) by Pencil Research and contributors |
| Driver file | devices/kurzweil/k2661.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/kurzweil/k2661.json --out-port <N> --in-port <M>
Then send OSC to 127.0.0.1:7777, for example:
From Claude or any MCP client, the osc-bridge mcp server exposes this driver as k2661: ask “what can the Kurzweil K2661 do?” and it reads this map with list_routes. See the MCP guide.
MIDI CC and NRPN parameters (28)¶
| OSC address | CC | NRPN (MSB/LSB) | Range | Nature | Section |
|---|---|---|---|---|---|
/k2661/mod |
1 | 0–127 | continuous | ||
/k2661/breath |
2 | 0–127 | continuous | ||
/k2661/foot |
4 | 0–127 | continuous | ||
/k2661/port_time |
5 | 0–127 | continuous | ||
/k2661/data |
6 | 0–127 | continuous | ||
/k2661/volume |
7 | 0–127 | continuous | ||
/k2661/balance |
8 | 0–127 | continuous | ||
/k2661/pan |
10 | 0–127 | continuous | ||
/k2661/expression |
11 | 0–127 | continuous | ||
/k2661/aux_bend2 |
15 | 0–127 | continuous | ||
/k2661/ctl_a |
16 | 0–127 | continuous | ||
/k2661/ctl_b |
17 | 0–127 | continuous | ||
/k2661/ctl_c |
18 | 0–127 | continuous | ||
/k2661/ctl_d |
19 | 0–127 | continuous | ||
/k2661/aux_bend1 |
21 | 0–127 | continuous | ||
/k2661/sustain |
64 | 0–127 | continuous | ||
/k2661/port_sw |
65 | 0–127 | continuous | ||
/k2661/sost_pd |
66 | 0–127 | continuous | ||
/k2661/soft_pd |
67 | 0–127 | continuous | ||
/k2661/frez_pd |
69 | 0–127 | continuous | ||
/k2661/legato_sw |
75 | 0–127 | continuous | ||
/k2661/ctl_e |
80 | 0–127 | continuous | ||
/k2661/ctl_f |
81 | 0–127 | continuous | ||
/k2661/ctl_g |
82 | 0–127 | continuous | ||
/k2661/ctl_h |
83 | 0–127 | continuous | ||
/k2661/fx_dep |
91 | 0–127 | continuous | ||
/k2661/data_inc |
96 | 0–127 | continuous | ||
/k2661/data_dec |
97 | 0–127 | continuous |
Performance MIDI¶
Notes, pitch bend and any CC are also available: /k2661/note/on <note> <velocity>, /k2661/cc/<number> <value>, /k2661/pitchbend <0-16383>, /k2661/program_change <n>.
Limitations¶
CC/NRPN only. SysEx (preset management, display control, bulk dump/load, vendor-proprietary opcodes) is NOT covered by pencilresearch. To extend this device with SysEx, sniff the vendor editor, add `sysex.header/footer` + `commands` blocks, and use `update_device.md` PR template.