Due an update in Unity versions on B129, many of the background music mods in this collection have been known to cause extreme lag while at periscope depth

Wampir was able to fix the Das Boot soundtrack by rebuilding the asset bundle with the latest version of Unity. Please wait until the rest of the BGM mods have been updated before use. Thank you.

Save game compatible.
A collection of mods that replace the game's default background music. Uboat will play a different track depending on what's happening in game. Action-oriented tracks for tense moments and calmer tracks during normal operations. These mods can be used with Radio Station mods found here without causing a conflict.

https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=2287684185

Select one BGM mod and one radio station mod. Selecting more than one of each type will cause a conflict.