Does it need a special midi cord or something?
No, but you gotta build a small piece of hardware. You need a 1k, 220 and 800 ohm resistor, a 9v battery, a midi socket,a 2.5mm plug socket and a pnp transistor
Sounds awesome. I have an Arduino, I might try it. Or even help.
No arduinos involved, but thank you for the offer.