I'm almost done with the book. There's useful information that goes beyond just music, and as much as I hesitate to read, let alone recommend any conciliar/VII friendly book that quotes often the big names of the novus ordo, it is still a very good book worth reading even for trads. It's a good 95-99% traditional, and even condemns a lot of modernist developments in the church quite strongly at times. The argument is rooted in tradition, just written by an FSSP goer, who I'm sure wishes that VII never happened, at least not the way it happened. Maybe he's just trying to sound friendly to novus ordites, who I would say the book is largely addressed to aside from all Catholics, and then everyone else, though I think it may be too Catholic Church and crisis in the Church oriented for the average non Catholic to get much out of, but then again the truth is found in the Church.