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Bastl Instruments Kastle 2 Wave Bard: MIDI CC, NRPN and OSC map

The Bastl Instruments Kastle 2 Wave Bard as named OSC addresses — 20 CC — ready to use from Claude (MCP), SuperCollider, Sonic Pi, TouchDesigner or any OSC app via osc-bridge.

Device Bastl Instruments Kastle 2 Wave Bard
Vendor Bastl Instruments
OSC prefix /kastle_2_wave_bard
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/bastl-instruments/kastle_2_wave_bard.pencilresearch.fw-unknown.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/bastl-instruments/kastle_2_wave_bard.pencilresearch.fw-unknown.json --out-port <N> --in-port <M>

Then send OSC to 127.0.0.1:7777, for example:

osc-bridge osc-send /kastle_2_wave_bard/pitch/pitch 63

From Claude or any MCP client, the osc-bridge mcp server exposes this driver as kastle_2_wave_bard: ask “what can the Bastl Instruments Kastle 2 Wave Bard do?” and it reads this map with list_routes. See the MCP guide.

MIDI CC and NRPN parameters (20)

OSC address CC NRPN (MSB/LSB) Range Nature Section
/kastle_2_wave_bard/pitch/pitch 14 0–127 continuous Pitch
/kastle_2_wave_bard/pitch/modulation 15 0–127 continuous Pitch
/kastle_2_wave_bard/pitch/scale 27 0–127 continuous Pitch
/kastle_2_wave_bard/pitch/root 28 0–127 continuous Pitch
/kastle_2_wave_bard/pitch/fine_tune 29 0–127 continuous Pitch
/kastle_2_wave_bard/sample/bank 1 0–127 continuous Sample
/kastle_2_wave_bard/sample/bank_modulation 26 0–127 continuous Sample
/kastle_2_wave_bard/sample/sample 16 0–127 continuous Sample
/kastle_2_wave_bard/sample/modulation 17 0–127 continuous Sample
/kastle_2_wave_bard/length/length 18 0–127 continuous Length
/kastle_2_wave_bard/length/modulation 19 0–127 continuous Length
/kastle_2_wave_bard/effects/filter 20 0–127 continuous Effects
/kastle_2_wave_bard/effects/fx 21 0–127 continuous Effects
/kastle_2_wave_bard/lfo/lfo 22 0–127 continuous LFO
/kastle_2_wave_bard/lfo/modulation 23 0–127 continuous LFO
/kastle_2_wave_bard/sequencer/tempo 24 0–127 continuous Sequencer
/kastle_2_wave_bard/sequencer/rhythm 25 0–127 continuous Sequencer
/kastle_2_wave_bard/global/output_volume 7 0–127 continuous Global
/kastle_2_wave_bard/global/input_gain 9 0–127 continuous Global
/kastle_2_wave_bard/global/reset_all_controllers 121 0–127 continuous Global

Performance MIDI

Notes, pitch bend and any CC are also available: /kastle_2_wave_bard/note/on <note> <velocity>, /kastle_2_wave_bard/cc/<number> <value>, /kastle_2_wave_bard/pitchbend <0-16383>, /kastle_2_wave_bard/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.