#1
I made this short composition for string quartet and it has some obvious Buckethead influence (I copied and transposed some riffs). I also listened/looked at some string quartets by Shostakovich.

The title of this piece is Carousel (merry-go-round) and the idea is that someone enters a park at night and suddenly sees this abandonded carousel, turns it on and makes it come alive. It's a pretty dark/crazy piece.

Let me know what you think. The audio sucks because it's Guitarpro.

https://soundcloud.com/electric-tear/a572-stringquartet
#2
I'd suggest you find a better software more geared toward writing this sort of music- it's hard to judge it with the quality. I'd like to hear it properly. It sounds like it matches your theme pretty well.
"This one is machine and nerve, and has its mind concluded
This one is but flesh and faith, and is the more deluded."