I understand your distaste for the preachy, but not all politics are preachy.
e.g.: The way the Ramones dressed and played was in itself a political statement. Further, look at the lyrics, which deal with feelings of boredom and disassociation from mainstream society. They are fun and goofy, and I'm not sure they had a programmed political agenda--they weren't Gang of Four--but the way they represented themselves as a band was a political gesture--obviously among other, perhaps more wonderful, things. Politics in one form or another are ubiquitous, so why not in music?
The book: I look forward to the entertainment this tome will bring me while I void my bowels.