The album scans don't seem to explicitly list the non-vocal composers anywhere, and I couldn't find credits for either Grand Battle game, so I wonder if others besides Hirose were responsible for the BGM. The track-by-track commentary was written by four different people: Hirose (credited only as recording director & engineer from Ganbarion), 渡辺靖仁 (
Yasuhito Watanabe? Recording engineer from Synclef), DARK. (recording engineer from Synclef), and Yoshiya Tanaka (producer from Bandai).