This is a very extensive soundtrack mod that's based on the anime's original Japanese soundtrack. It replaces almost every track in the main game, DLC 3 (Trunks - The Warrior of Hope), DLC 4 (Bardock - Alone Against Fate), DLC 5 (23rd Tenkaichi Budokai), and DLC 6 (Goku's Next Journey) by Shunsuke Kikuchi's (R.I.P.) fantastic work on Dragon Ball Z, while Norihito Sumitomo's Dragon Ball Super compositions were used to mod the soundtrack of DLC 1 and 2.

One of my bigger reasons for creating this mod (Besides the fact that the anime's soundtrack is sublime) is that each arc in the anime has a number of distinct tracks that are primarily used in it, which gives a sense of musical variety. While the game's original soundtrack is excellent as is, I still found it somewhat lacking due to the repeated use of its tracks in every story arc. I tried to rectify this by making multiple different mods that correspond to specific story chapters.

The mod can either be downloaded as a complete pack that contains all the modded files, or as individual files depending on your preference!

Simply copy the desired "Bgm.awb" file into the following "Bgm" folder to replace the default "Bgm.awb" file in there:
"...Steam/steamapps/common/DRAGON BALL Z KAKAROT/AT/Content/Sound/Bgm"

Here are my suggested ideal parts in the game to switch out the soundtrack file:
 
DBZ Kakarot Soundtrack JPN Mod 01 - Raditz
Start with this if you're beginning a new game.
 
DBZ Kakarot Soundtrack JPN Mod 02 - Saiyans
Use this as soon as the Saiyans land on Earth.
 
DBZ Kakarot Soundtrack JPN Mod 02.5 - Vegeta
Use this as soon as the final Nappa fight concludes and you gain back control of Goku.
 
DBZ Kakarot Soundtrack JPN Mod 03 - Namek
Use this just before getting on the spaceship that's heading to planet Namek.
 
DBZ Kakarot Soundtrack JPN Mod 04 - Androids
Use this once you're done with the post Namek intermission and just before you talk to Chi Chi where she'll ask if you're ready to "hit the
books".
 
DBZ Kakarot Soundtrack JPN Mod 05 - Cell
Use this once Bulma asks you to meet her near Gingertown to investigate the mysterious time machine.
 
DBZ Kakarot Soundtrack JPN Mod 06 - Majin Buu
Use this once you're done with the post Cell games intermission and just before you talk to Chi Chi where she'll ask you to come back home
after training.
 
DBZ Kakarot Soundtrack JPN Mod 07 - Kid Buu
Use this once you arrive at the Land of the Kais as Goku to investigate the mysterious yet familiar energy.
 
DBZ Kakarot Soundtrack JPN Mod 07.5 - Post Game
Use this once you're done with the main story and you want to mess around in the post game or do some side content.
 
DBZ Kakarot Soundtrack JPN Mod 08 - A New Power Awakens Part 1
Use this before starting the "A New Power Awakens Part 1" DLC
 
DBZ Kakarot Soundtrack JPN Mod 09 - A New Power Awakens Part 2
Use this before starting the "A New Power Awakens Part 2" DLC
 
DBZ Kakarot Soundtrack JPN Mod 10 - Trunks - The Warrior of Hope
Use this before starting the "Trunks - The Warrior of Hope" DLC
 
DBZ Kakarot Soundtrack JPN Mod 11 - Trunks - The Warrior of Hope - Epilogue
Use this after finishing the "Trunks - The Warrior of Hope" DLC. Specifically after making it past the DLC credits cutscene!

DBZ Kakarot Soundtrack JPN Mod 12 - Bardock - Alone Against Fate
Use this before starting the "Bardock - Alone Against Fate" DLC

DBZ Kakarot Soundtrack JPN Mod 13 - 23rd Tenkaichi Budokai
Use this before starting the "23rd Tenkaichi Budokai" DLC

Individual Download - Mod 14 - End of Z
Use this before starting the "Goku's Next Journey" DLC

P.S. You might also want to check out "Solid State Scouter" every time you replace the soundtrack file! Well not everytime, but most of the time ;)