So, let’s answer this question comprehensively: how do you connect a MIDI keyboard to your audio interface? 1. Plug it into your computer In short – you don’t. For some of you, at least.

For an older standard, MIDI has remarkable staying power ... each of which is mapped one-to-one to a parameter on the computer, allowing the interface to feel more like an analog device where ...

The SID chip inside the Commodore 64 and 128 is arguably still the gold standard for chip tunes, and the C64 itself still a decent computer ... to the cart over a MIDI interface.