Dream Link

[Kadai]

From this page I was able to rescue the names of two of the members of this circle:

http://studiocrealeap.web.fc2.com/profile.html

They are:
鐘下楽 -> Gaku Kaneshita
深沢大樹 -> Daiju Hukazawa

Shame, I am not sure what were they roles, but the pictures listed there hints that "Gaku" may be the arranger and "Daiju" the performer.

Maybe that information is listed in the inner booklet?

[Kadai]

I am the most blind person in this universe... the back of the booklet had the information I was looking for:

Arrangements:
Tr.01 鐘下楽
Tr.02 ひときり (hitokiri?)
Tr.03-04 ベルネイジ (beruneiji?)
Tr.05-08 深沢大樹

Also, it looks like this same persons where involved in this later album:
https://vgmdb.net/album/19997