As the media wrangler from the Fader walked me into the Fader Fort to see a show featuring performances by Future, the Afghan Whigs, and a secret special guest she’d assured me I wouldn’t want to miss (but wasn’t at liberty to reveal over e-mail), I told her that I ‘d overheard people discussing who that guest might be. The most popular guess I’d heard, I told her, was Kendrick Lamar. “Kendrick stopped by last night,” she said. There are so many big artists dropping in on SXSW shows unannounced that it wasn’t surprising that one of my favorite musicians at the moment had done a surprise show and I hadn’t even heard.

“Don’t tell anyone,” she said, “but Usher’s going to jump onstage with the Afghan Whigs for a couple of songs.”

It took me a few moments to regain my composure.