devices/expressive-e/osmose.electra-richard-kram-ctrl-v2.fw-10.52.jsonEdit on GitHubJSONExpressive E Osmose (per Electra preset) MIDI CC chart, NRPN and OSC map
The Expressive E Osmose MIDI implementation: 22 CC, each named, for Claude (MCP), SuperCollider or any OSC app.
- sourceElectra One preset
- firmware10.52
- real unitnot yet checked
Not checked on a real Expressive E Osmose yet. Own one? Load a sound or send a control, and tell us whether it worked.
- Maker
- Expressive E
- Version
- per Electra preset
- Source
- Electra One preset
- OSC prefix
/osmose
Use 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/expressive-e/osmose.electra-richard-kram-ctrl-v2.fw-10.52.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 osmose: ask “what can the Expressive E Osmose do?” and it reads this map with list_routes. See the MCP guide.
MIDI controls
22 controls, each with its number, its range and the name to send
| Control | CC | Range | Name to send |
|---|---|---|---|
| Macro i | 12 | 0–127 | /osmose/macro_i |
| Macro ii | 13 | 0–127 | /osmose/macro_ii |
| Macro iii | 14 | 0–127 | /osmose/macro_iii |
| Macro iv | 15 | 0–127 | /osmose/macro_iv |
| Macro v | 16 | 0–127 | /osmose/macro_v |
| Macro vi | 17 | 0–127 | /osmose/macro_vi |
| Mix | 93 | 0–127 | /osmose/mix |
| Min max | 26 | 0–127 | /osmose/min_max |
| Mix | 24 | 0–127 | /osmose/mix |
| Delay r4 | 23 | 0–127 | /osmose/delay_r4 |
| Feedback r3 | 22 | 0–127 | /osmose/feedback_r3 |
| Drive | 90 | 0–127 | /osmose/drive |
| Min max | 18 | 0–127 | /osmose/min_max |
| Pre delay r5 | 95 | 0–127 | /osmose/pre_delay_r5 |
| Hpf r6 | 96 | 0–127 | /osmose/hpf_r6 |
| Ratio | 92 | 0–127 | /osmose/ratio |
| Mix | 85 | 0–127 | /osmose/mix |
| Attack | 91 | 0–127 | /osmose/attack |
| Rate r2 | 21 | 0–127 | /osmose/rate_r2 |
| Frequency | 84 | 0–127 | /osmose/frequency |
| Depth r1 | 20 | 0–127 | /osmose/depth_r1 |
| Tilt | 83 | 0–127 | /osmose/tilt |
Performance MIDI
Notes, pitch bend and any CC are also available: /osmose/note/on <note> <velocity>, /osmose/cc/<number> <value>, /osmose/pitchbend <0-16383>, /osmose/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.
Other versions
The Expressive E Osmose is mapped in 2 versions. per pencilresearch canonical CSV.
Frequently asked questions
How many parameters of the Expressive E Osmose can be controlled over MIDI?
SynthHub's map of the Expressive E Osmose lists 22 MIDI CC parameters, each with its number, range and a readable name; the full chart is on this page.
Can an AI agent like Claude control the Expressive E Osmose?
Yes: SynthHub's hosted MCP server knows the Expressive E Osmose's MIDI map, and its browser relay lets the agent send it parameter changes or load a sound, each sound change confirmed by you.