From Sonic Retro:
http://forums.sonicretro.org/index.php?showtopic=21092
QUOTE (Sestern)
well this is what Saori Kobayashi answered me about Mariko Nanba cooperation.
Saori : Mariko Nanba was my once co-worker.
And she is still my good friend.
In the case of AZEL,
I composed the main themeĀ and she asisited me.
We created AZEL's music parts based on it.
for example:
main theme.......kobayashi
stage 1..........kobayashi
stage 1,2 boss...kobayashi
stage 3..........nanba
stage 4 boss.....nanba
..........like that.
/end
voila, so no specific theme attributed
.....
So whatever "Stage 3" and "Stage 4 Boss" are equate to Nanba.
Furthermore, both variatons of Metamorphosis and Giant Creature are Kobayashi's, as JASRAC showed through MJCA-10009 (
http://vgmdb.net/album/1038)
http://www.youtube.com/watch?v=pBaG3ADi7aE - Metamorphosis / Mutation 1
http://www.youtube.com/watch?v=zZDSdJfwxT4 - Metamorphosis / Mutation 2
http://www.youtube.com/watch?v=cV5JrrioJ3Y - Giant Creature 1
http://www.youtube.com/watch?v=GgeSELnLPeA - Giant Creature 2
And yes, The Black Fleet is definitely an arrangement done by Nanba. This isn't the only time Marvelous Entertainment used this crediting system.
(
http://vgmdb.net/album/1643)
http://www.youtube.com/watch?v=67LiP-mtpMw - Noble Rebel Army
http://www.youtube.com/watch?v=uHJFDJWoMc8 - The Black Fleet