I missed it while it was going on, and am just catching up now, but back in November NPR did a series of blog entries about the last decade in music. So many of the entries are fascinating. One in particular caught my attention, first for the provocative title, but then for the informative essay on how changes in the way music is recorded (Protools, autotune, compression) which are meant to improve the quality of music is actually having adverse effects. Please check it out and let me know what you think.
You can browse the entire list of topics they covered, and choose one that seems more interesting to you. The list includes American Idol, how indie folk beards are effecting rock music, downloading music, and the decades most important recordings.