So a few weeks ago I posted an instrumental version of a song that I described as power metal + reggae. The song has changed quite a bit since then (the reggae is barely noticeable now) and yesterday vocals were added. The song itself is pretty crazy and all-over-the-place, so I'm not sure if the vocals really fit.

Here's where I need your help: Do the vocals fit/sound good? Should they be higher/lower in the mix? Does the song flow as a whole? Should I keep the ad-libbed vocals at the end? Thanks in advance for any advice you can give me. The song is on my profile, called "Twinkies & Cockroaches."