I haven't read the Spitz biography, but I read a couple different Beatles biographies as a teenager. What Beatles fan wouldn't want to have been a fly on the wall of some of their greatest recording sessions? This is what "Here, There and Everywhere" by Geoff Emerick delivers. You not only get the interpersonal relationships, the friendships and conflicts that are now well established as part of rock and roll history, you get the technical side of recording. You get the moment when John Lennon tells George Martin that he wants to sound like he's singing from the moon and you get Geoff Emerick's (the author AND the Beatles sound engineer for nearly all their major recordings) solution of running his vocals through a Leslie Speaker. -Something that has been emulated a gazillion times since. There are a bunch of really fantastic moments in the book. Though I haven't read Spitz's book, I'm confident in saying, "put it down and pick up Emerick's". There is no way it will take you more than a few days to read. Also, the second link in your comment didn't work for me, just brought me back here.