I do a lot of electronic music, primarily using Reason, but this is my first time finishing a track entirely using standard midi instruments. I did a bunch of layering to get the sounds I wanted for certain instruments, and I would have done more but the program I was using (Easy Beat) limited me to 16 tracks.
http://sl4.startan3.com/carp/turquoisehexagonsun.mid
I made it to accompany a Doom 2 deathmatch map I was working on, to which I gave the same name.
Screenshots:
http://sl4.startan3.com/screens/gw2/DOOM0231.png
http://sl4.startan3.com/screens/gw2/DOOM0230.png
(No, there's no turquoise in it. There's none in the Doom palette. Sue me. :p )

