Composer cheat sheet, brackets are the sources:
101 Miki Higashino [GS Hiroyuki Namba, GS Kentaro Haneda]
102 ??? (either Tappy or Hiroshi Tamawari) [GS2 reprise] / Miki Higashino [Don*]
103 ??? Miki Higashino [GS Kentaro Haneda] / Tappy [Don*]
105 Tappy [GS Vocal, Don*]
107 Hiroshi Tamawari [Don*]
109 Tappy [Midi on his site, Don*]
111 Tappy [Don*]
112 Miki Higashino [GS2 reprise 116] / Tappy [Don*]
113 ? (not by Higashino, either Tappy or Hiroshi Tamawari?) [GS2 reprise] / Tappy [Don*]
114 Miki Higashino [GS4 JASRAC, GS2 reprise]
115 Tappy [GS Hiroyuki Namba, midi on his site]
116 Miki Higashino [GSuikogaiden 2 reprise]
117 Miki Higashino [GS Kentaro Haneda]
118 Mayuko Kageshita [GS1 Liner notes]
120 ??? Taniguchi [GS1 Liner Notes] / Tappy, Kageshita [Don*]
122 Mayuko Kageshita [GS1 Liner Notes]
128 Taniguchi [GS1 Liner Notes, Don*]
129 Taniguchi [GS1 Liner Notes, Don*]
201 Tappy [Don*]
203 Tappy [Don*]
204 Miki Higashino [GS Kentaro Haneda]
206 Miki Higashino [GS Hiroyuki Namba]
208 Tappy [Don*]
213 Tappy [Midi on his site]
215 Miki Higashino [Melody of Legend - Chapter of Love]
217 Miki Higashino [GS Vocal]
218 Miki Higashino [GS2 reprise]
219 Tappy [Don*]
221 Hiroshi Tamawari ["Tama-dator" nickname, Don*]
222 Miki Higashino [GS2 reprise]
223 Miki Higashino [GS1]
REST: Miki Higashino [Don*]
* From correspondence, but marked as "Probably it is correct."
Arranged tracks (the arrangements may be by others)
102 106 107 201 202 211 228 - Miki Higashino [main theme, 101]
212 224 - Tappy [related to 213]
219 - Tappy [related to 105]
- 128 TAPPY [GS3 JASRAC], Taniguchi [GS4 JASRAC], Miki Higashino [JASRAC etc] <-- W.T.F. (Taniguchi should prevail due to liner notes info)
- Some tracks are reprised in GS2. Those confirmed *not* by Higashino aren't credited to her, so the rest should be her's.
(GS2 track 216 sounds slightly like GS1 113 but I don't think it's enough to disprove this)
- 102 is credited in GS4 JASRAC to Higashino, but maybe it's due to the main theme, dunno.
- Taniguchi and Kageshita only wrote the ones listed above, according to the liner notes.
-
Tappy's midis(archived), confirms composition
- Hiroshi Tamawari's
old site (archived) confirms he did compose/arrange/manipulate 5 tracks: