I've just previewed Low Max and Stretch Max so far, and while the music isn't as loud as usual in Low Max, that's not the main problem. What I hear sounds like a microphone problem: Cathe's voice sounds too loud and harsh at times, sometimes tinny, sometimes like bad reception on a basement telephone. When I reduce the volume to attempt to get rid of the harshness (I got tinitus from listening to it!), the music IS too low.
In Stretch Max, the music (and sound in general) is too low, IMO. (But I don't like the music, so I wouldn't necessarily want it louder!).