MIDI CC & NRPN database

What it does

You can change the sounds your synths make with special MIDI messages! 🎉🎉🎉 The message codes are inconsistent and the docs are hard to find.😭😭😭 Here's an open, "comprehensive" dataset of MIDI CCs and NRPNs, populated by CSV files that anyone can edit.

The open,

• 
  MIDI Database, an open source library of MIDI implementations2024 · github.com · ▲18

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• MT
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• IB
  I built a WebMIDI sequencer to control my hardware synthsDec 2025 · simplychris.ai · ▲43

  Hey HN, I’m an ex-Google engineer trying to get back into music production. I needed a way to sequence my hardware synths using AI contexts without constantly switching windows, so I built this. It runs entirely in the browser using WebMIDI. No login required. It connects to your local MIDI devices (if you're on Chrome/Edge) and lets you generate patterns. Tech stack: [React / WebMIDI API / etc]. Link: www.simplychris.ai/droplets Code is a bit messy, but it works. Feedback welcome.

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