another fascinating periodical is LMJ.
It covers a whole range of music, and has
had some wonderful articles recently by Eddie Prevost,
Scanner, David Toop, and Bob Ostertag.
It's a little pricey, but it comes with cds and on-line access
to previous issues.
I think there may be some free articles available for perusal.
http://mitpress2.mit.edu/e-journals/...lmj/sound.html