Ok, I’m so late to writing my own researches …
And I feel sure there is still much worthy content on the web still unknown to me. Yes, I rail at Google and the duplicate and duplicitious crap that appears in every search. Here are two very thoughtful, thoughtfilling, and thoughtprovoking blogs that deal with music in very deep ways:
Liz Garnet http://www.helpingyouharmonise.com/blog
Richard Sparks http://richardsparks1.blogspot.com
Update: And http://atheoryofmusic.wordpress.com/ recently trying to figure things out by tetrachords.