Please consider making a pass through the music files and bringing them into the same sound range level.
There’s one that plays during enemy turns that is near earbleed status even drowning out sound effects. Makes for a very uneven sounding transition back to the lower level player turn bg music.
We’re aware of a bug introduced in the latest patch that is causing some of the music to bypass the filter which normalises volume levels. It was too late to track this down and fix it without delaying the patch, so we are planning to hotfix it later.
Also, frag grenades frequently don’t make any noise when they detonate.