http://www.bravewave.net/genseries/003/
Ninja Ryukenden (both NES & arcade) will also get another release (probably without the extra sound channels added in the original) (https://www.youtube.com/watch?v=aFTlOnxhL4U).
VGMDb forum: http://vgmdb.net/forums/showthread.php?t=17529
I'm not familiar with Brave Wave, except that they released the Street Fighter II Definitive Collection. (http://vgmdb.net/album/55819) Holy hell, I need to buy that! :o
Anyone else looking forward to this release?
The digital release has been out for a week! :o
http://store.bravewave.net/album/ninja-gaiden-the-definitive-soundtrack-vol-1-2
CD versions:
http://store.bravewave.net/album/ninja-gaiden-the-definitive-soundtrack-vol-1
http://store.bravewave.net/album/ninja-gaiden-the-definitive-soundtrack-vol-2