GlennMagusHarvey
Since: Jan, 2001
#2: Dec 12th 2012 at 8:23:02 AM
DYRE from IJBM got it; it's "Kouga Ninpou Chou" by Omnyouza, the OP to Basilisk.
Total posts: 2
The background music in this video: https://www.youtube.com/watch?v=VZX6-k75wU0
Skip to 0:56 for the refrain; that's when I knew I'd heard it before but just couldn't place it.
I'm pretty sure it's associated with some anime.