The cue file provided with patch is used here.
Per the readme: "Exchange the original cue sheet with the provided one (or else some music will not play)."
FILE "Ultima Underworld - The Stygian Abyss (JP).img" BINARY
TRACK 01 MODE2/2352
INDEX 01 00:00:00
TRACK 02 AUDIO
INDEX 00 33:00:23
INDEX 01 33:02:23
TRACK 03 AUDIO
INDEX 00 36:09:47
INDEX 01 36:11:47
TRACK 04 AUDIO
INDEX 00 38:36:48
INDEX 01 38:38:48
http://www.zaqmusic.com/UU/UU_ENG_PATCH.zip https://www.romhacking.net/translations/psx/patches/7062readme.txt
The cue file provided with patch is used here. Per the readme: "Exchange the original cue sheet with the provided one (or else some music will not play)."