I met Pink Floyd through the ultimate Gen X reflex: “Another Brick in the Wall, Part 2.” What began as the delicious rebellion of kids pushing back against authority opened the door to something much bigger: Money, Have a Cigar, Wish You Were Here, The Wall, and a strange, brilliant musical world filled with questions about conformity, anxiety, time, isolation, mortality, and being human. Pink Floyd gave us the sound before some of us were old enough to understand the meaning. The music didn’t change. We did.