lol koichi sugiyama was only really involved with 46 Okunen Monogatari: The Shinka Ron[46億年物語 -THE 進化論-] and he's credited here for the remastered tracks they used, the rest of the ost is filler by some other guy that's noticeably worse! it is a shame that it makes stages after the 1st feel much more repetitive
Koichi Sugiyama: https://www.youtube.com/watch?v=2crrEogfje0