A simple guide/reference to where the music files are and what the corresponding titles are. You don’t need to struggle over what the song name is because I did it for you.
 
 

Music files location and file naming

You’ll find the music to replace here
 
 

path/to/steam-install/steamapps/common/Ys The Oath in Felghana/release/music

 
 
There’s three types of naming conventions
 

 
File format has to be ogg (didn’t test if others will work), and you can choose to replace any one of the three styles. I replaced X68k with the Wanderers from Ys versions by Yonemitsu Ryo because they’re freaking amazing.
 
 
 

Corresponding song titles

And here’s the corresponding song titles (using the Felghana naming convention and a text file found in the same folder).
 
 
The notes column is just to identify if that song exists in the Wanderers from Ys PCE ost collection I had. When that song didn’t have a Wanderers PCE version, I used ones from Perfect Collection Ys III (Pc3 in the table), because those were also by Yonemitsu Ryo and I just love his stuff. Bonus points because there are some good vocal tracks as well.
 
 

–

 
That table is essentially all you need to switch out the music as you want. Just manually rename files. Or you can also use a small and simple script from the next section which I wrote for myself. Nothing fancy.
 
 
 

A python script to handle the renaming/converting for you

 
 
Can I post code in a guide? shrugs
 
 
Dependencies: pydub – [github.com]  (for audio conversion), tqdm – [github.com]  (for pretty progress)
 
 

# convert and rename ys 3 music files to <format>.ogg

import os
import tqdm
import glob
import shutil
import argparse

from pydub import AudioSegment

NAME_STYLE = "X68000" # PC-88, X68000, Fel
MUSIC_DIR = "../music-to-rename"
OUTPUT_DIR = "converted-files"

rename_dict = {
 "PC-88": ["y3bg", "p"], # prefix, number, suffix
 "X68000": ["y3bg", "x"],
 "Fel": ["Y3BG", ""]
}

def main(
 name_style: str,
 music_dir: str,
 output_dir: str
):
 files = sorted(glob.glob(music_dir + "/*"))
 a*sert len(files), "No files in the directory to convert"
 a*sert len(files) == 35, "You should have 35 music files to convert. otherwise keep ogg dummies, they're skipped"

 
 os.makedirs(output_dir, exist_ok=True)

 for file_num, file_path in tqdm.tqdm(enumerate(files), desc="Songs converted", total=len(files)):
 file_loc, file = os.path.split(file_path)
 _, file_ext = os.path.splitext(file)

 renamed_file = rename_dict[name_style][0] + f"{file_num + 1:02}" + f"{'a' if file_num == 21 else ''}" + rename_dict[name_style][1] + ".ogg"

 if file_ext == ".ogg":
 # no conversion necessary
 shutil.copy2(
 file_path, 
 os.path.join(output_dir, renamed_file)
 )
 else:
 sound = AudioSegment.from_file(file_path)
 sound.export(
 os.path.join(output_dir, renamed_file),
 format="ogg"
 )

if __name__ == "__main__":
 parser = argparse.ArgumentParser(formatter_cla*s=argparse.ArgumentDefaultsHelpFormatter)
 parser.add_argument("--name-style", "-s", type=str, default=NAME_STYLE, help="Naming style of converted files.", choices=rename_dict.keys())
 parser.add_argument("--music-dir", "-i", type=str, default=MUSIC_DIR, help="Directory with exactly 35 music files in ascending order, no trailing slash")
 parser.add_argument("--output-dir", "-o", type=str, default=OUTPUT_DIR, help="The output directory")

 args = parser.parse_args()

 main(
 args.name_style,
 args.music_dir,
 args.output_dir
 )

 
 
Usage:
 

• Put exactly 35 files in a folder, their format doesn’t matter as long as it’s music and can be handled by ffmpeg.
• Their order should be the same as that from the table earlier (just use your file explorer and sort name ascending to verify).
• Set this folder as MUSIC_DIR in the code.
• Run.

 
You should be able to figure the rest out, its nothing complicated. Though I’ll add details here if someone asks for more in the comments. If anyone even uses this.
 
 
Thanks for reading and have fun~
 
 

 
 
I hope you enjoy the How to replace music – Ys: The Oath in Felghana guide. This is all for now! If you have something to add to this guide or forget to add some information, please let us know via comment! We check each comment manually!