RE: Testing 4th-Gen Focusrite Scarlett 2i2 Audio Interface:

Yes that's the word I was forgetting:'DIN' MIDI connection.
Your MPKmini must be different than mine because it only has a USB connection, and a jack in for an expression pedal.
Yours runs off of wall power?

Recording real instruments is a genuine skill.
It's a lot harder than most people think. I find guitar particularly difficult to record with distortion/overdrive.