During credits > Sound Section:
Yuki Ichiki
Yukinori Takada
Tsukasa Saitoh
Yuji Kanda
http://www.youtube.com/watch?feature...YE2SraE#t=389s
They are all members of
N.O.Y.B. unit. And while we don't know who exactly should be credited for the 4 tracks present on this CD, it should be safe to put unit's name in a composer's field.