Yamaha SEQTRAK: MIDI CC, NRPN and OSC map¶
The Yamaha SEQTRAK as named OSC addresses — 40 CC — ready to use from Claude (MCP), SuperCollider, Sonic Pi, TouchDesigner or any OSC app via osc-bridge.
| Device | Yamaha SEQTRAK |
|---|---|
| Vendor | Yamaha |
| OSC prefix | /seqtrak |
| 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/yamaha/seqtrak.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/yamaha/seqtrak.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 seqtrak: ask “what can the Yamaha SEQTRAK do?” and it reads this map with list_routes. See the MCP guide.
MIDI CC and NRPN parameters (40)¶
| OSC address | CC | NRPN (MSB/LSB) | Range | Nature | Section |
|---|---|---|---|---|---|
/seqtrak/sound_design/track_volume |
7 | 0–127 | continuous | Sound design | |
/seqtrak/sound_design/track_pan |
10 | 1–127 | continuous | Sound design | |
/seqtrak/sound_design/drum_pitch |
25 | 40–88 | continuous | Sound design | |
/seqtrak/sound_design/mono_poly_chord |
26 | 0–2 | continuous | Sound design | |
/seqtrak/sound_design/attack_time |
73 | 0–127 | continuous | Sound design | |
/seqtrak/sound_design/decay_release_time |
75 | 0–127 | continuous | Sound design | |
/seqtrak/sound_design/filter_cutoff |
74 | 0–127 | continuous | Sound design | |
/seqtrak/sound_design/filter_resonance |
71 | 0–127 | continuous | Sound design | |
/seqtrak/sound_design/reverb_send |
91 | 0–127 | continuous | Sound design | |
/seqtrak/sound_design/delay_send |
94 | 0–127 | continuous | Sound design | |
/seqtrak/sound_design/eq_high_gain |
20 | 40–88 | continuous | Sound design | |
/seqtrak/sound_design/eq_low_gain |
21 | 40–88 | continuous | Sound design | |
/seqtrak/sound_design/portamento_time |
5 | 0–127 | continuous | Sound design | |
/seqtrak/sound_design/portamento_switch |
65 | 0–1 | switch | Sound design | |
/seqtrak/sound_design/arp_type |
27 | 0–16 | continuous | Sound design | |
/seqtrak/sound_design/arp_gate |
28 | 0–127 | continuous | Sound design | |
/seqtrak/sound_design/arp_speed |
29 | 0–9 | continuous | Sound design | |
/seqtrak/sound_design/fm_algorithm |
116 | 0–127 | continuous | Sound design | |
/seqtrak/sound_design/fm_modulation_amount |
117 | 0–127 | continuous | Sound design | |
/seqtrak/sound_design/fm_modulator_frequency |
118 | 0–127 | continuous | Sound design | |
/seqtrak/sound_design/fm_modulator_feedback |
119 | 0–127 | continuous | Sound design | |
/seqtrak/effects/master_effect_1_assigned_parameter_1 |
102 | 0–127 | continuous | Effects | |
/seqtrak/effects/master_effect_1_assigned_parameter_2 |
103 | 0–127 | continuous | Effects | |
/seqtrak/effects/master_effect_1_assigned_parameter_3 |
104 | 0–127 | continuous | Effects | |
/seqtrak/effects/master_effect_2_assigned_parameter |
105 | 0–127 | continuous | Effects | |
/seqtrak/effects/master_effect_3_assigned_parameter |
106 | 0–127 | continuous | Effects | |
/seqtrak/effects/single_effect_assigned_parameter_1 |
107 | 0–127 | continuous | Effects | |
/seqtrak/effects/single_effect_assigned_parameter_2 |
108 | 0–127 | continuous | Effects | |
/seqtrak/effects/single_effect_assigned_parameter_3 |
109 | 0–127 | continuous | Effects | |
/seqtrak/effects/send_reverb_assigned_parameter_1 |
110 | 0–127 | continuous | Effects | |
/seqtrak/effects/send_reverb_assigned_parameter_2 |
111 | 0–127 | continuous | Effects | |
/seqtrak/effects/send_reverb_assigned_parameter_3 |
112 | 0–127 | continuous | Effects | |
/seqtrak/effects/send_delay_assigned_parameter_1 |
113 | 0–127 | continuous | Effects | |
/seqtrak/effects/send_delay_assigned_parameter_2 |
114 | 0–127 | continuous | Effects | |
/seqtrak/effects/send_delay_assigned_parameter_3 |
115 | 0–127 | continuous | Effects | |
/seqtrak/mute_solo/mute |
23 | 0–127 | continuous | Mute / solo | |
/seqtrak/mute_solo/solo |
24 | 0–11 | continuous | Mute / solo | |
/seqtrak/other/damper_pedal |
64 | 0–127 | continuous | Other | |
/seqtrak/other/sostenuto |
66 | 0–127 | continuous | Other | |
/seqtrak/other/expression_control |
11 | 0–127 | continuous | Other |
Performance MIDI¶
Notes, pitch bend and any CC are also available: /seqtrak/note/on <note> <velocity>, /seqtrak/cc/<number> <value>, /seqtrak/pitchbend <0-16383>, /seqtrak/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.