The music in Dungeon of the Endless was great--and I really like the remixes of past tracks in Endless Dungeon! That being said, even if I turned all combat and menu sounds off, the music is very, very quiet, even on 100 volume. It's not even the balance of the instrumentals, it just seems that the decibel values or whatever are just set to really low positions.

As a side note, I noticed one of the songs just ends with a sudden loud crashing of instrumentals and it legitimately surprised me in an unpleasant way. I couldn't tell you what the song is called though since no names are available (unless they are hiding in the games files but uhhhh no idea how to do that stuff). I believe it was one of the 'mellow' tracks that plays when Waves aren't coming.