Midi keyboard to in-game instrument

[bullsquidwalker]

Hi. I want to somehow use my midi keyboard to play the instruments in-game. I've already tried using software like MidiKeys2Keys, but there was an issue. When I released a midi key, it would treat this action as-if I pressed down on the key, resulting in the character being inputted twice. I also noticed that binding each midi key to each keyboard key was extremely slow. I hope that this is somewhat legible, I am not very eloquent.
Thanks.