Although this game hasn't gotten a soundtrack yet, it's possible to disambiguate who did what between Hosoe and Saso, not just speculation based on style but rather some differences between their files. All of these use variable bitrates, but Hosoe's seem to be around 96 kbps while Saso's are around 350 kbps. The engineer tag for Hosoe's is "aaa bbb" and Saso's is her SuperSweep email address.

Shinji Hosoe:

• Opening (no engineer tag, but bitrate matches Hosoe's tracks)
• Menu
• Rounds Lv 1, 2, 5
• Konoha Lv 1, 2, ura
• Master Lv 1~3
• Break Into (reused from TGM3)
• Versus (reused from TGM3)

Ayako Saso:

• Normal end (rearrangement of "Happy Happy" from TGM1)
• Rounds Lv 3, 4
• Shiranui Lv 1~6 (4 has no engineer tag, but bitrate matches Saso's tracks)
• Asuka Lv 1, 2
• Kachusha (reused from TGM Ace; original composition by Matvey Blanter)
• Karinka (reused from TGM Ace; original composition by Ivan Larionov)
• Korobuchika (reused from TGM Ace; original composition traditional)

aaa bbb