or Abigail's Party, the way music is used to signify social status or aspiration. Here, appreciation of classical music is simply a way of showing how much more sophisticated a listener you are. Just stick to the Classic FM playlist and stay away from anything too avant-garde else you will start to sound like a weirdo rather than a person of wealth, culture and upbringing.
Even the more contemporary choices show a leaning toward authenticity (Snow Patrol, Coldplay etc.). It's all very safe and very adult. By the look of it, none of the music referenced in the book is actually in any way sexy, but the fantasy of sophistication promoted by the music is clearly doing it for middle-class housewives buying the books by the truckload.