I wasn't too impressed with this. It feels highly anecdotal with very little depth or science to back it up. The scope also feels rather narrow with Sacks sticking to tales relating to the genres of music he is most familiar, i.e classical and opera, with barely any consideration for the wider spectrum. In addition, it felt a bit like a compilation album in that many of the stories are taken from better works by Sacks, and often it felt too much like the emphasis was on him rather than the patients or the music. There are some rather touching moments in here, but for the most part it is generally disappointing. If you want an easily accessible but in depth look at music and its effects on the brain you are much better off with Daniel Levitin's 'This is Your Brain on Music' which manages to balance the mystery and wonder of it whilst also providing some good science, proper studies, and well rounded views.