This additional content includes:

- "Proof of a Hero: Recorder Version" BGM
- "Silver-winged Star - Valstrax: Recorder Version" BGM
- "Archdemon of the Abyss: Halloween Version" BGM
- "Scarlet Feast - Malzeno: Metal Version" BGM

Enjoy these various arrangements in different locations around Elgado Outpost!

- Music can be set in the Room Customization section of the Housekeeper menu.
- Music cannot be changed during quests.

More details on the official game page of "Proof of a Hero & Monster Music: Various Arrangements" BGM ...