Here's some stuff I've done in the past. These are pretty old and were WIPs, and I can't really show the music I have made for the SHMUP to date because, well, spoilers!
https://dl.dropboxusercontent.com/u/35092772/03_Isolated_Islands.mp3
https://dl.dropboxusercontent.com/u/35092772/flight_of_the_hedgehog.mp3
https://dl.dropboxusercontent.com/u/35092772/boss.mp3
https://dl.dropboxusercontent.com/u/35092772/untitled22.mp3
https://dl.dropboxusercontent.com/u/35092772/star-rise_knoll.mp3 (from a "remaster" competition, originally by JACE)