I've been trying to remember this game's name I used to played on my gameboy, a lot, as a kid, cause the music was very good and finally I found it. I have the rom but don't know how to rip the music without sfx. There's even an original soundtrack:
After Burst Original Soundtracks - VGMdb (http://vgmdb.net/album/9089)

The game on youtube:
After Burst - Game Boy Gameplay - YouTube (http://www.youtube.com/watch?v=yvwgKBQdNsY)

Hope someone can help me.

Thanks a lot, as always.