The API should expose MIDI devices, even though they are in the "Audio" class. about webusb

[7ombie]

It is worth noting that, while the spec for the WebMIDI API contains non-normative sections that explicitly mention Launchpads and DJ controllers, the normative parts of the specification state that the API is only available in the main thread (and there is no intention to change that, despite many of us wishing that there was).

Given that the main thread will never provide the low-latency responses that realtime MIDI requires, this spec should address the fact that the WebMIDI spec simply does not provide support for USB-MIDI controllers.

USB-MIDI controllers are an important USB device class that is effectively unsupported by the Web, so I'd be grateful if the maintainers of this API would reconsider this specific nuance of the blacklist.