There aren't many books by NR that I don't like, as she is so talented and writes on a variety of informed topics, i.e. ballet, horse racing, Irish history, among just a few.
But this one wasn't rich in its story and the characters failed to ring true, especially to their professions. For instance, I never could accept Brian in the role of lead singer for a band, he just didn't fit this profile at all. And I wanted to feel his music, his singing, but that never happened. We readers should have felt the music as if we were in the audience, or at least off stage.
In most of NR's books, the reader truly comes to know the characters, but not so in this one. Brian and the rest were dull, and I really didn't like the way this story unfolded.