I was hoping to find a list to share back in response to your comment that had a listing of different music and their calibrations, similar to a section in Power Vs. Force, though this is about all I could find:
https://drandrewcolyer.wordpress.com/category/calibrated-music/
I recall that generally, rap music and heavy metal calibrated quite low, while classical was definitely up there in the 400s or 500s...
RE: ...