Excellent book, one of those rare books that dared to stand up for the truth.
As a former CCM leader, the author gave a unique perspective.
However, it would appear that the author was holding back a little in page 86, where he tried not to judge bad music, contradicting his previous arguments...when he misquoted Paul's verse on "not to be a stumbling block" for others (1 Corinthians 8), for the CCM leaders. I believe like what his other chapters have mentioned, that CCM leaders should stop using music mindlessly and start to do more sensitive and thorough research on the subject. Not simply stop because it would be a "stumbling block" for others. When Paul avoided doing certain things in order to not stumble brothers around, he was referring to things that are not sinful on their own. While the point of this whole book is to point out the sinful nature of CCM itself.
Overall, it is still a remarkable book. Excellent practical points in chapters 16 and 17 where he mentioned of how congregation should not just read words on projector screens, but anyone has the ability to learn to read the hymnbooks.
Other than using body language as an allegory, one could also use movie casts as another.
The story of a movie, as like the lyrics of a song, the most popular, sexiest actors/actresses, as the music.
I think I could even write a dialogue of a christian movie pre-production about this.