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Sequential Prophet 12 ARP V1.0 MIDI CC chart, NRPN and OSC map

The Sequential Prophet 12 ARP V1.0 MIDI implementation: 72 NRPN, each named, for Claude (MCP), SuperCollider or any OSC app.

Device Sequential Prophet 12 ARP V1.0
Vendor Sequential
OSC prefix /prophet_12_arp_v1_0
Source πŸŽ›οΈ Derived from an Electra One community preset
Revision per Electra preset
Upstream electra-preset
Driver file devices/sequential/prophet_12_arp_v1_0.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/sequential/prophet_12_arp_v1_0.json --out-port <N> --in-port <M>

Then send OSC to 127.0.0.1:7777, for example:

osc-bridge osc-send /prophet_12_arp_v1_0/arp_mode 63

From Claude or any MCP client, the osc-bridge mcp server exposes this driver as prophet_12_arp_v1_0: ask β€œwhat can the Sequential Prophet 12 ARP V1.0 do?” and it reads this map with list_routes. See the MCP guide.

MIDI CC and NRPN parameters (72)

OSC address CC NRPN (MSB/LSB) Range Nature Section
/prophet_12_arp_v1_0/arp_mode 2 / 34 0–127 continuous
/prophet_12_arp_v1_0/range 2 / 35 0–127 continuous
/prophet_12_arp_v1_0/repeats 2 / 37 0–127 continuous
/prophet_12_arp_v1_0/bpm 2 / 40 30–249 continuous
/prophet_12_arp_v1_0/clock_divide 2 / 36 0–127 continuous
/prophet_12_arp_v1_0/arp 2 / 33 0–127 continuous
/prophet_12_arp_v1_0/arp_latch 2 / 38 0–127 continuous
/prophet_12_arp_v1_0/lock_notes 2 / 39 0–127 continuous
/prophet_12_arp_v1_0/arp1 2 / 45 0–128 continuous
/prophet_12_arp_v1_0/arp2 2 / 46 0–128 continuous
/prophet_12_arp_v1_0/arp3 2 / 47 0–128 continuous
/prophet_12_arp_v1_0/arp4 2 / 48 0–128 continuous
/prophet_12_arp_v1_0/arp5 2 / 49 0–128 continuous
/prophet_12_arp_v1_0/arp6 2 / 50 0–128 continuous
/prophet_12_arp_v1_0/velocity 2 / 77 0–127 continuous
/prophet_12_arp_v1_0/velocity 2 / 78 0–127 continuous
/prophet_12_arp_v1_0/velocity 2 / 79 0–127 continuous
/prophet_12_arp_v1_0/velocity 2 / 80 0–127 continuous
/prophet_12_arp_v1_0/velocity 2 / 81 0–127 continuous
/prophet_12_arp_v1_0/velocity 2 / 82 0–127 continuous
/prophet_12_arp_v1_0/arp7 2 / 51 0–128 continuous
/prophet_12_arp_v1_0/arp8 2 / 52 0–128 continuous
/prophet_12_arp_v1_0/arp9 2 / 53 0–128 continuous
/prophet_12_arp_v1_0/arp10 2 / 54 0–128 continuous
/prophet_12_arp_v1_0/arp11 2 / 55 0–128 continuous
/prophet_12_arp_v1_0/arp12 2 / 56 0–128 continuous
/prophet_12_arp_v1_0/velocity 2 / 83 0–127 continuous
/prophet_12_arp_v1_0/velocity 2 / 84 0–127 continuous
/prophet_12_arp_v1_0/velocity 2 / 85 0–127 continuous
/prophet_12_arp_v1_0/velocity 2 / 86 0–127 continuous
/prophet_12_arp_v1_0/velocity 2 / 87 0–127 continuous
/prophet_12_arp_v1_0/velocity 2 / 88 0–127 continuous
/prophet_12_arp_v1_0/arp13 2 / 57 0–128 continuous
/prophet_12_arp_v1_0/arp14 2 / 58 0–128 continuous
/prophet_12_arp_v1_0/arp15 2 / 59 0–128 continuous
/prophet_12_arp_v1_0/arp16 2 / 60 0–128 continuous
/prophet_12_arp_v1_0/velocity 2 / 89 0–127 continuous
/prophet_12_arp_v1_0/velocity 2 / 90 0–127 continuous
/prophet_12_arp_v1_0/velocity 2 / 91 0–127 continuous
/prophet_12_arp_v1_0/velocity 2 / 92 0–127 continuous
/prophet_12_arp_v1_0/arp17 2 / 61 0–128 continuous
/prophet_12_arp_v1_0/arp18 2 / 62 0–128 continuous
/prophet_12_arp_v1_0/arp19 2 / 63 0–128 continuous
/prophet_12_arp_v1_0/arp20 2 / 64 0–128 continuous
/prophet_12_arp_v1_0/arp21 2 / 65 0–128 continuous
/prophet_12_arp_v1_0/arp22 2 / 66 0–128 continuous
/prophet_12_arp_v1_0/velocity 2 / 93 0–127 continuous
/prophet_12_arp_v1_0/velocity 2 / 94 0–127 continuous
/prophet_12_arp_v1_0/velocity 2 / 95 0–127 continuous
/prophet_12_arp_v1_0/velocity 2 / 96 0–127 continuous
/prophet_12_arp_v1_0/velocity 2 / 97 0–127 continuous
/prophet_12_arp_v1_0/velocity 2 / 98 0–127 continuous
/prophet_12_arp_v1_0/arp23 2 / 67 0–128 continuous
/prophet_12_arp_v1_0/arp24 2 / 68 0–128 continuous
/prophet_12_arp_v1_0/arp25 2 / 69 0–128 continuous
/prophet_12_arp_v1_0/arp26 2 / 70 0–128 continuous
/prophet_12_arp_v1_0/arp27 2 / 71 0–128 continuous
/prophet_12_arp_v1_0/arp28 2 / 72 0–128 continuous
/prophet_12_arp_v1_0/velocity 2 / 99 0–127 continuous
/prophet_12_arp_v1_0/velocity 2 / 100 0–127 continuous
/prophet_12_arp_v1_0/velocity 2 / 101 0–127 continuous
/prophet_12_arp_v1_0/velocity 2 / 102 0–127 continuous
/prophet_12_arp_v1_0/velocity 2 / 103 0–127 continuous
/prophet_12_arp_v1_0/velocity 2 / 104 0–127 continuous
/prophet_12_arp_v1_0/arp29 2 / 73 0–128 continuous
/prophet_12_arp_v1_0/arp30 2 / 74 0–128 continuous
/prophet_12_arp_v1_0/arp31 2 / 75 0–128 continuous
/prophet_12_arp_v1_0/arp32 2 / 76 0–128 continuous
/prophet_12_arp_v1_0/velocity 2 / 105 0–127 continuous
/prophet_12_arp_v1_0/velocity 2 / 106 0–127 continuous
/prophet_12_arp_v1_0/velocity 2 / 107 0–127 continuous
/prophet_12_arp_v1_0/velocity 2 / 108 0–127 continuous

Performance MIDI

Notes, pitch bend and any CC are also available: /prophet_12_arp_v1_0/note/on <note> <velocity>, /prophet_12_arp_v1_0/cc/<number> <value>, /prophet_12_arp_v1_0/pitchbend <0-16383>, /prophet_12_arp_v1_0/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

How many parameters of the Sequential Prophet 12 ARP V1.0 can be controlled over MIDI?

SynthHub's map of the Sequential Prophet 12 ARP V1.0 lists 72 NRPN 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 Sequential Prophet 12 ARP V1.0?

Yes: SynthHub's hosted MCP server knows the Sequential Prophet 12 ARP V1.0's MIDI map, and its browser relay lets the agent send it parameter changes or load a sound, each sound change confirmed by you.