I disagree with the predominant belief that composers can be categorized most accurately by era. By technique, surely -- but technique isn't all. It makes sense then to say they have outlooks/attributes that cross technique and genre boundaries.
Instead of categorizing composers by era, it makes sense to use a dual characterization. I've come up with some types I find interesting.
- Most medieval music
These wouldn't work as absolute categories, but more like the way tags work on blog posts: they describe, and so are used "randomly" across category lines, like tagging a post with "politics, food, anarchy, USA."
There are whole categories unplumbed here, and some of the more interesting cases cross lines. Bach, for example, verges from academic to Romantic, depending on which piece and for what purpose it was written.
To keep this \m/ ("gay"), I'd have to say the same thing applies to metal bands:
- Morbid Angel
- The Abyss
It's an interesting comparison, for minds to feed on, but isn't designed to convince or control them. It's an offering to those who might be able to do something with it, because I'm out of time (OOT) to write about it.