Thank @ OØTORIGEN

Edit BGM is here.

Download

Lets
https://letsupload.io/2Mrxi
1File
https://1fichier.com/?u41h4vhr1c25onz1b4jn
Zippy
https://filecrypt.cc/Container/1838F5D72D.html

How to use
Create a folder named “SRW MUSIC” on a USB storage device such as a USB memory
Save the MP3 file you want to use as BGM in the created folder and connect it to the PlayStation®4 main unit.