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Torso S4(inProgress) MIDI CC chart, NRPN and OSC map

The Torso S4(inProgress) MIDI implementation: 44 CC, each named, for Claude (MCP), SuperCollider or any OSC app.

Device Torso S4(inProgress)
Vendor Torso
OSC prefix /s4_inprogress
Source πŸŽ›οΈ Derived from an Electra One community preset
Revision per Electra preset
Upstream electra-preset
Driver file devices/torso/s4_inprogress.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 β€” 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/torso/s4_inprogress.json --out-port <N> --in-port <M>

Then send OSC to 127.0.0.1:7777, for example:

osc-bridge osc-send /s4_inprogress/track_1 0

From Claude or any MCP client, the osc-bridge mcp server exposes this driver as s4_inprogress: ask β€œwhat can the Torso S4(inProgress) do?” and it reads this map with list_routes. See the MCP guide.

MIDI CC and NRPN parameters (44)

OSC address CC NRPN (MSB/LSB) Range Nature Section
/s4_inprogress/track_1 46 -40–0 continuous
/s4_inprogress/filter 50 -50–50 continuous
/s4_inprogress/filter 51 -50–50 continuous
/s4_inprogress/filter 52 -50–50 continuous
/s4_inprogress/filter 53 -50–50 continuous
/s4_inprogress/track_2 47 -40–0 continuous
/s4_inprogress/track_3 48 -40–0 continuous
/s4_inprogress/track_4 49 -40–0 continuous
/s4_inprogress/color 94 0–127 continuous
/s4_inprogress/color 95 0–127 continuous
/s4_inprogress/color 96 0–127 continuous
/s4_inprogress/color 98 0–127 continuous
/s4_inprogress/color 94 0–127 continuous
/s4_inprogress/color 95 0–127 continuous
/s4_inprogress/color 96 0–127 continuous
/s4_inprogress/color 98 0–127 continuous
/s4_inprogress/color 94 0–127 continuous
/s4_inprogress/color 95 0–127 continuous
/s4_inprogress/color 96 0–127 continuous
/s4_inprogress/color 98 0–127 continuous
/s4_inprogress/color 94 0–127 continuous
/s4_inprogress/color 95 0–127 continuous
/s4_inprogress/color 96 0–127 continuous
/s4_inprogress/color 98 0–127 continuous
/s4_inprogress/space 112 0–127 continuous
/s4_inprogress/space 113 0–127 continuous
/s4_inprogress/space 110 0–127 continuous
/s4_inprogress/space 114 0–127 continuous
/s4_inprogress/space 112 0–127 continuous
/s4_inprogress/space 113 0–127 continuous
/s4_inprogress/space 110 0–127 continuous
/s4_inprogress/space 114 0–127 continuous
/s4_inprogress/space 112 0–127 continuous
/s4_inprogress/space 113 0–127 continuous
/s4_inprogress/space 110 0–127 continuous
/s4_inprogress/space 114 0–127 continuous
/s4_inprogress/space 112 0–127 continuous
/s4_inprogress/space 113 0–127 continuous
/s4_inprogress/space 110 0–127 continuous
/s4_inprogress/space 114 0–127 continuous
/s4_inprogress/cr_co_noi_ti 97 -50–50 continuous
/s4_inprogress/level 115 0–127 continuous
/s4_inprogress/xy_pad 111 0–127 continuous
/s4_inprogress/dial 116 -50–50 continuous

Performance MIDI

Notes, pitch bend and any CC are also available: /s4_inprogress/note/on <note> <velocity>, /s4_inprogress/cc/<number> <value>, /s4_inprogress/pitchbend <0-16383>, /s4_inprogress/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.

Frequently asked questions

Which MIDI CC controls the filter cutoff on the Torso S4(inProgress)?

CC 50 (-50–50), named /s4_inprogress/filter in SynthHub's map.

How many parameters of the Torso S4(inProgress) can be controlled over MIDI?

SynthHub's map of the Torso S4(inProgress) lists 44 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 Torso S4(inProgress)?

Yes: SynthHub's hosted MCP server knows the Torso S4(inProgress)'s MIDI map, and its browser relay lets the agent send it parameter changes or load a sound, each sound change confirmed by you.