Here's who is known to have done what, so far. Track titles are based on
this playlist so some of them might be a bit awkward.
Kaneda: (source:
my correspondence with him)
- Battle Theme I
- Dark Area
- DATS Headquarters Entrance
- Demon Lord Battle
- Distant remembrance
- End Credits
- Hope
- Ice Labyrinth
- Kosaburo's Theme
- Sneyato Forest
Abe: (source:
Chimeratio's correspondence with him)
- Boss Battle Theme (reused from Digimon Battle Terminal)
- Comrade Joins
- Doomsday Forest Ruin
- Enemy defeated
- Etemon Battle Theme (+ three short mixes)
- Sea Precipice Jerapilus
- Shopping
- Victory!
Namiki: (source:
my correspondence with him)
It's worth noting that Namiki isn't even credited in-game, only on Basiscape's website and his own website. I would assume his track was added so late into development that the credits sequence was already made and then they forgot to add his name in.
Some guesses I have right now, too. Many tracks I'm less sure on, so they're not listed here, and not all of these guesses could be correct either:
Iwata:
- DATS Headquarters
- Mirage Museum
- Rage Cavern
Kamikura:
- Battle Theme II
- Evolution Battle Theme (as well as its short mix, Digisoul Charge!)
- Unknown
- Yuma's Theme
Sakimoto:
- Main Menu
- Opening
- Walter Island/Livilus Island