How to get quest to recognise MIDI input

Hi,

can anyone help? I am developing an app for the quest with unity that takes input from a midi keyboard. (Using Minis plug-in) Runs fine in unity and through quest link but would like to get it to run standalone with a keyboard plugged straight into the quest. This has been done with apps such as piano vision so it is possible but cannot find any info online as to how to accomplish the quest recognising a midi piano. Any suggestions greatly appreciated.