This book will appeal primarily to people who are VERY interested in pop culture and music. I spent much of my childhood listening to my parents' old 45-rpm records, and purchased more than a few of them on my own. For someone who likes to hear the stories behind the stories, or who is fascinated by trivia and ephemera, there's lots to love here.
But first you have to get through the initial few chapters. The start of this book definitely falls on the technical side of things, with the author explaining the differences between the old 78-rpm shellac records, the ensuing 33 1/3-rpm LPs, EPs, and 45s, covering the recording and pressing methods, and generally giving the reader far more information than he or she truly needs. I learned some interesting things, but much of the detail was lost on me.
But the slog through the early chapters was worthwhile, as it went quickly into the actual history: the competition, the feuds, the race to get different versions of a song out and positioned for success, and plenty of behind-the-scenes stories. There's even a chapter on the most valuable 45s in existence (though a few of them are iffy on the "existence" part). I'm unlikely to ever run across one of those rarities, but at least now, if I ever find myself in a conversation about 45s and the role they played in shaping popular music, I'll be able to hold my own.