Looks like someone went through the review section on Amazon
and had a field day with the erotic wording of the title:
As implied by the title, this collection probes deeply into Wagner's vast Ring piece. Accusations of anti-semitism make Wagner's Ring a sensitive area today, but it continues to offer pleasure to many. This is a masterful work of musical scholarship that deserves a place on any sturdy shelf. No doubt it will influence appreciation of Wagner's Ring for many years to come. Among the highlights is the revealing chapter on the many characters than Wagner has managed to cram into his Ring. Also covered are the brass instruments that Wagner designed specifically for use within the Ring. There will always be those who are opposed to musical analysis (just the same as there will always be those who resort to juvenile humour, regarding the title). They will say that Wagner's Ring is 'violated' with excessive force of scholarship. For this reviewer, however, Wagner's Ring remains quite intact and is indeed tightened by the exploration. In short, this stimulating venture in and out of Wagner's Ring has resulted in a seminal, fluid output.