Photo: Kevin Mazur/Getty Images
“Hey, what the hell?!” someone shouted belligerently — or at least more belligerently than you’d expect outside the entrance to a Billy Joel concert. The doors to Madison Square Garden were supposed to open at 6 p.m. but now it was 6:30, and some shoving had ensued. This wasn’t just a line for fans to get into the venue, but a chance for them to purchase official shirts, hats, and jackets exclusive to Joel’s 150th gig at the World’s Most Famous Arena, and the last of his monthly (more or less) residency that began in 2014.
In addition to the typical MSG merch spots, a separate pop-up had been erected to mark the occasion. Sure, most of the material was available to buy online — minus a custom “I…