Recently, I did something that I hadn’t done in a long time: flipped the side. The record was King Crimson’s Red, a 1974 gem that rejoined my collection last May when an old college roommate unloaded a bunch of vinyl on me (not surprisingly, several other LPs of mine, missing since college, turned up in the stash). I can’t remember the last time I just sat and listened to a full album from start to finish without multitasking — was it high school? But Red had me riveted.

