A really awesome mash-up!!! Is it completely vocals? Because that's sweet; there aren't any "blank spots" because you seem to cover them really well with overlapping vocals and transitions, as well as a pretty consistent and constant background of vocals. I especially love the harmony in the end, it really makes this song worth listening to over and over and overandoverandover... (etc.) I honestly can't think of many critiques for this, I guess just watching the harmony in the end because it got louder (just because of all the voices, I guess) and threatened to drown out the main melody? It didn't, but I suppose that's always something to watch out for! But the balance was pretty good, and I liked how you kinda pared it down in the end to the single vocal. Preeeeetty awesome!