My sincere apologies Seammus, but that sounds very stupid. Most performers beg reviewers to do their CD, and hope they will think they are brilliant. As we all know, that can never be. Reviewers are not there to pamper to the jumped up artist who thinks they are the best thing since sliced bread.
I suggest that reviewers bring a clause in that makes the artist's agree that they cannot sue the reviewer under any circumstances. If they don't sign, no review.