They cater to musicians because that's what midi was invented for. At the end of the day it's just a protocol and you can interpret it however you like. Any ran

They cater to musicians because that's what midi was invented for. At the end of the day it's just a protocol and you can interpret it however you like. Any random midi controller will work great. My relatively cheap keyboard has midi over USB and I was able to dump raw midi into a terminal after five minutes of googling.