Mutable Instruments Shruthi 4PM: MIDI CC, NRPN and OSC map¶
The Mutable Instruments Shruthi 4PM as named OSC addresses — 43 CC, 3 NRPN — ready to use from Claude (MCP), SuperCollider, Sonic Pi, TouchDesigner or any OSC app via osc-bridge.
| Device | Mutable Instruments Shruthi 4PM |
|---|---|
| Vendor | Mutable Instruments |
| OSC prefix | /shruthi_4pm |
| Source | 🎛️ Derived from an Electra One community preset |
| Revision | per Electra preset |
| Upstream | electra-preset |
| Driver file | devices/mutable-instruments/shruthi_4pm.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/mutable-instruments/shruthi_4pm.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 shruthi_4pm: ask “what can the Mutable Instruments Shruthi 4PM do?” and it reads this map with list_routes. See the MCP guide.
MIDI CC and NRPN parameters (46)¶
| OSC address | CC | NRPN (MSB/LSB) | Range | Nature | Section |
|---|---|---|---|---|---|
/shruthi_4pm/osc_1_shape |
20 | 0–127 | continuous | ||
/shruthi_4pm/osc_1_param |
21 | 0–127 | continuous | ||
/shruthi_4pm/osc_1_range |
22 | -24–24 | continuous | ||
/shruthi_4pm/sub_osc_shape |
23 | 0–127 | continuous | ||
/shruthi_4pm/mix_operator |
28 | 0–127 | continuous | ||
/shruthi_4pm/osc_balance |
29 | 0–63 | continuous | ||
/shruthi_4pm/osc_2_shape |
24 | 0–127 | continuous | ||
/shruthi_4pm/osc_2_param |
25 | 0–127 | continuous | ||
/shruthi_4pm/osc_2_range |
26 | -24–24 | continuous | ||
/shruthi_4pm/osc_2_detune |
27 | 0–127 | continuous | ||
/shruthi_4pm/sub_osc_vol |
30 | 0–63 | continuous | ||
/shruthi_4pm/noise_vol |
31 | 0–63 | continuous | ||
/shruthi_4pm/env_1 |
104 | 0–127 | continuous | ||
/shruthi_4pm/env_1 |
105 | 0–127 | continuous | ||
/shruthi_4pm/env_1 |
106 | 0–127 | continuous | ||
/shruthi_4pm/env_1 |
107 | 0–127 | continuous | ||
/shruthi_4pm/env_2 |
108 | 0–127 | continuous | ||
/shruthi_4pm/env_2 |
109 | 0–127 | continuous | ||
/shruthi_4pm/env_2 |
110 | 0–127 | continuous | ||
/shruthi_4pm/env_2 |
111 | 0–127 | continuous | ||
/shruthi_4pm/cutoff |
14 | 0–127 | continuous | ||
/shruthi_4pm/resonance |
15 | 0–63 | continuous | ||
/shruthi_4pm/env_cutoff_mod |
102 | 0–63 | continuous | ||
/shruthi_4pm/filter_mod |
0 / 92 | 0–127 | continuous | ||
/shruthi_4pm/reso_flavours |
0 / 93 | 0–127 | continuous | ||
/shruthi_4pm/lfo_cutoff_mod |
103 | 0–63 | continuous | ||
/shruthi_4pm/lfo_1_shape |
112 | 0–127 | continuous | ||
/shruthi_4pm/lfo_1_rate |
113 | 0–143 | continuous | ||
/shruthi_4pm/lfo_1_attack |
114 | 0–127 | continuous | ||
/shruthi_4pm/lfo1_sync_mode |
115 | 0–127 | continuous | ||
/shruthi_4pm/lfo2_shape |
116 | 0–127 | continuous | ||
/shruthi_4pm/lfo_2_rate |
117 | 0–143 | continuous | ||
/shruthi_4pm/lfo_2_attack |
118 | 0–127 | continuous | ||
/shruthi_4pm/lfo2_sync_mode |
119 | 0–127 | continuous | ||
/shruthi_4pm/seq_mode |
75 | 0–127 | continuous | ||
/shruthi_4pm/seq_bpm |
0 / 101 | 40–240 | continuous | ||
/shruthi_4pm/arp_direction |
78 | 0–127 | continuous | ||
/shruthi_4pm/arp_range |
79 | 0–127 | continuous | ||
/shruthi_4pm/octave |
82 | 0–127 | continuous | ||
/shruthi_4pm/scale_key_map |
83 | 0–127 | continuous | ||
/shruthi_4pm/seq_groove |
76 | 0–127 | continuous | ||
/shruthi_4pm/groove_amount |
77 | 0–127 | continuous | ||
/shruthi_4pm/arp_pattern |
80 | 0–120 | continuous | ||
/shruthi_4pm/clock_division |
81 | 0–127 | continuous | ||
/shruthi_4pm/portamento |
84 | 0–63 | continuous | ||
/shruthi_4pm/legato |
68 | 0–127 | continuous |
Performance MIDI¶
Notes, pitch bend and any CC are also available: /shruthi_4pm/note/on <note> <velocity>, /shruthi_4pm/cc/<number> <value>, /shruthi_4pm/pitchbend <0-16383>, /shruthi_4pm/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.