Roland TR-8S: MIDI CC, NRPN and OSC map¶
The Roland TR-8S as named OSC addresses — 55 CC, 22 drum sounds — ready to use from Claude (MCP), SuperCollider, Sonic Pi, TouchDesigner or any OSC app via osc-bridge.
| Device | Roland TR-8S |
|---|---|
| Vendor | Roland |
| OSC prefix | /tr_8s |
| 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/roland/tr_8s.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/roland/tr_8s.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 tr_8s: ask “what can the Roland TR-8S do?” and it reads this map with list_routes. See the MCP guide.
MIDI CC and NRPN parameters (55)¶
| OSC address | CC | NRPN (MSB/LSB) | Range | Nature | Section |
|---|---|---|---|---|---|
/tr_8s/bd_tune |
20 | 0–127 | continuous | ||
/tr_8s/bd_decay |
23 | 0–127 | continuous | ||
/tr_8s/bd_ctrl |
96 | 0–127 | continuous | ||
/tr_8s/bd_level |
24 | 0–127 | continuous | ||
/tr_8s/sd_tune |
25 | 0–127 | continuous | ||
/tr_8s/sd_decay |
28 | 0–127 | continuous | ||
/tr_8s/sd_ctrl |
97 | 0–127 | continuous | ||
/tr_8s/sd_level |
29 | 0–127 | continuous | ||
/tr_8s/lt_tune |
46 | 0–127 | continuous | ||
/tr_8s/lt_decay |
47 | 0–127 | continuous | ||
/tr_8s/lt_ctrl |
102 | 0–127 | continuous | ||
/tr_8s/lt_level |
48 | 0–127 | continuous | ||
/tr_8s/mt_tune |
49 | 0–127 | continuous | ||
/tr_8s/mt_decay |
50 | 0–127 | continuous | ||
/tr_8s/mt_ctrl |
103 | 0–127 | continuous | ||
/tr_8s/mt_level |
51 | 0–127 | continuous | ||
/tr_8s/ht_tune |
52 | 0–127 | continuous | ||
/tr_8s/ht_decay |
53 | 0–127 | continuous | ||
/tr_8s/ht_ctrl |
104 | 0–127 | continuous | ||
/tr_8s/ht_level |
54 | 0–127 | continuous | ||
/tr_8s/rs_tune |
55 | 0–127 | continuous | ||
/tr_8s/rs_decay |
56 | 0–127 | continuous | ||
/tr_8s/rs_ctrl |
105 | 0–127 | continuous | ||
/tr_8s/rs_level |
57 | 0–127 | continuous | ||
/tr_8s/hc_tune |
58 | 0–127 | continuous | ||
/tr_8s/hc_decay |
59 | 0–127 | continuous | ||
/tr_8s/hc_ctrl |
106 | 0–127 | continuous | ||
/tr_8s/hc_level |
60 | 0–127 | continuous | ||
/tr_8s/ch_tune |
61 | 0–127 | continuous | ||
/tr_8s/ch_decay |
62 | 0–127 | continuous | ||
/tr_8s/ch_ctrl |
107 | 0–127 | continuous | ||
/tr_8s/ch_level |
63 | 0–127 | continuous | ||
/tr_8s/accent |
71 | 0–127 | continuous | ||
/tr_8s/oh_tune |
80 | 0–127 | continuous | ||
/tr_8s/oh_decay |
81 | 0–127 | continuous | ||
/tr_8s/oh_ctrl |
108 | 0–127 | continuous | ||
/tr_8s/oh_level |
82 | 0–127 | continuous | ||
/tr_8s/cc_tune |
83 | 0–127 | continuous | ||
/tr_8s/cc_decay |
84 | 0–127 | continuous | ||
/tr_8s/cc_ctrl |
109 | 0–127 | continuous | ||
/tr_8s/cc_level |
85 | 0–127 | continuous | ||
/tr_8s/rc_tune |
86 | 0–127 | continuous | ||
/tr_8s/rc_decay |
87 | 0–127 | continuous | ||
/tr_8s/rc_ctrl |
110 | 0–127 | continuous | ||
/tr_8s/rc_level |
88 | 0–127 | continuous | ||
/tr_8s/reverb_level |
91 | 0–127 | continuous | ||
/tr_8s/delay_level |
16 | 0–127 | continuous | ||
/tr_8s/delay_time |
17 | 0–127 | continuous | ||
/tr_8s/delay_feedback |
18 | 0–127 | continuous | ||
/tr_8s/master_fx_ctrl |
19 | 0–127 | continuous | ||
/tr_8s/master_fx_on |
15 | 0–127 | continuous | ||
/tr_8s/auto_fill_in_manual_trig |
70 | 0–127 | continuous | ||
/tr_8s/auto_fill_in_on |
14 | 0–127 | continuous | ||
/tr_8s/external_in_level |
12 | 0–127 | continuous | ||
/tr_8s/shuffle |
9 | 0–127 | continuous |
Drum sounds (22)¶
Send <address> [velocity] [note] [channel] to fire the sound (Note On).
| OSC address | Sound | Note(s) | Channel | Velocity |
|---|---|---|---|---|
/tr_8s/drum/default_note_map/bass_drum |
Bass drum | 36 | 10 | |
/tr_8s/drum/default_note_map/snare_drum |
Snare drum | 38 | 10 | |
/tr_8s/drum/default_note_map/low_tom |
Low tom | 43 | 10 | |
/tr_8s/drum/default_note_map/mid_tom |
Mid tom | 47 | 10 | |
/tr_8s/drum/default_note_map/high_tom |
High tom | 50 | 10 | |
/tr_8s/drum/default_note_map/rim_shot |
Rim shot | 37 | 10 | |
/tr_8s/drum/default_note_map/hand_clap |
Hand clap | 39 | 10 | |
/tr_8s/drum/default_note_map/closed_hi_hat |
Closed hi-hat | 42 | 10 | |
/tr_8s/drum/default_note_map/open_hi_hat |
Open hi-hat | 46 | 10 | |
/tr_8s/drum/default_note_map/crash_cymbal |
Crash cymbal | 49 | 10 | |
/tr_8s/drum/default_note_map/ride_cymbal |
Ride cymbal | 51 | 10 | |
/tr_8s/drum/alternate_note_map/bass_drum |
Bass drum | 35 | 10 | |
/tr_8s/drum/alternate_note_map/snare_drum |
Snare drum | 40 | 10 | |
/tr_8s/drum/alternate_note_map/low_tom |
Low tom | 41 | 10 | |
/tr_8s/drum/alternate_note_map/mid_tom |
Mid tom | 45 | 10 | |
/tr_8s/drum/alternate_note_map/high_tom |
High tom | 48 | 10 | |
/tr_8s/drum/alternate_note_map/rim_shot |
Rim shot | 56 | 10 | |
/tr_8s/drum/alternate_note_map/hand_clap |
Hand clap | 54 | 10 | |
/tr_8s/drum/alternate_note_map/closed_hi_hat |
Closed hi-hat | 44 | 10 | |
/tr_8s/drum/alternate_note_map/open_hi_hat |
Open hi-hat | 55 | 10 | |
/tr_8s/drum/alternate_note_map/crash_cymbal |
Crash cymbal | 61 | 10 | |
/tr_8s/drum/alternate_note_map/ride_cymbal |
Ride cymbal | 63 | 10 |
Performance MIDI¶
Notes, pitch bend and any CC are also available: /tr_8s/note/on <note> <velocity>, /tr_8s/cc/<number> <value>, /tr_8s/pitchbend <0-16383>, /tr_8s/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.