Nice work
Pretty similar to the original, but that makes it all th better for me: this isn't a track that can be easily fiddled around with.
As for Heresaspoon, if he even knew the first thing about musical composition, he would be able to tell that a hell of a lot more than simple MIDI modification is at work here.
MIDI stands for Musical Instrument Digital Interface, which uses your computer's inbuilt soundcard to generate the sounds. Unless you are using actual audio loops or playing music in using an instrument (besides a keyboard hooked up to your computer) it will likely be MIDI at play anyway. What has been suggested is that you opened a MIDI file, twiddled a few settings, and re-exported it as audio. This is NOT the case. Good job dude on this anyway, the loop didn't get grating, which is always a plus.