This is really cool. I'd work on your mastering a bit more, since the whole song is sausaged through. (I'm not too great with mastering myself, so I can't really suggest much)
Other than that, great work!

Interesting. Not something I'd necessarily want to listen to every day, but it's not bad. I'd say it's alright for a loop, though I feel you could've made a few touches, and I'm not a big fan of the formant. Other than that, you did decent.

Holy hell! You should be more well known! This is really good, nice job.