Great start. :)
I think the intro was a little out of place, since it sounded a little slow, but I think that crunch noise was good what the one guy said in his review wasn't good. Actually, maybe... the intro could be changed up a bit, not sure how... maybe a little bit more speed. And then use that "crunch" noise, and bring out the song with that. Almost like squishing all the sounds in one and throwing it out to make a whole different thing. Anyways, I like it. :D Ending abruptly, but as you say... it is only a short demo of a collab. I just gotta send you some demo beats, maybe some background sounds or something... XD