Maybe the core specification isn't that big a deal if you're just trying to get started writing some note on/off messages, but the full set of specifications wi

Maybe the core specification isn't that big a deal if you're just trying to get started writing some note on/off messages, but the full set of specifications with all the controllers and sysex messages and extensions and supplements is pretty long: https://www.midi.org/specifications-old/item/the-midi-1-0-specification https://www.midi.org/specifications-old/item/the-midi-1-0-sp... And you can add in that vendors also have weird proprietary sysex messages a lot of the time. Also I second a sibling comment here, there are a decent number of gotchas with the state machine.