In these virtual pages, we’ve already discussed why 1966 was a revolutionary year in general. Now, to continue our celebration of this landmark year’s 50th anniversary, we’ll get specific. What did 1966 mean to The Beatles? According to Steve Turner’s excellent new book, Beatles ‘66: The Revolutionary Year, it was the crux of their existence as a working band — building on past triumphs, peaking with their most remarkable work, and even sowing the seeds of their eventual demise. Turner considers the events of 1966 too important to be condensed and shoehorned into a typical Beatles bio, and the year deserves its own book.

It was first and foremost a transformative year for them. In the space of just a few months, they went from their matching suits and famous pudding-bowl haircuts, bashing out “She’s A Woman” into a wall of deafening screams, to being draped in beads and velvet…