USB MIDI connection

[_kit_]

I noticed that there are 3 USB connection types on the Xperia X: charging, MTP and MIDI.

What is the MIDI connection used for?

[Uliwooly · Accepted solution]

Use USB to 

Use device as MIDI

Use device for musical instrument apps (MIDI input)

https://developer.android.com/reference/android/media/midi/package-summary.html