Completing the book required some hard choices about what to keep and what to remove. In the end, I have about 100 pages of material which was removed, plus a whole host of topics that were on my "to do" list but simply turned out to be unnecessary for one reason or another.

Some of these are amplifications of edits or crossfades, while others cut more to the motivation for the project. I wrote a long section about how the Beatles were considerably more playful – and less disciplined – when George Martin was not present for recording sessions. I also wrote much more about the early albums between Please Please Me and Revolver. I even considered several other compelling possibilities for proof-of-concept projects.

A couple of big ideas would have required another six months or so of research and writing, but I didn't want to hold the project that long, determined to get it out by the 50th anniversary of Paul's announcement of the breakup.

This blog will serve as an outlet for some of these ideas, and I'll continue writing (casually) until I get them all out of my system.

Welcome, and thanks for coming along for the ride.