Earlier this month, Charli XCX joined Substack . It’s not odd for a pop star to want to share thoughts in a more long-form, newsletter setting (her friend Lorde notably kept a long-running tour diary well before the Substack boom in recent years). But her first two posts do contain some big reflections on her life as a pop star, specifically her feelings about existing as one in this current moment. “After my previous album, Brat , I had this feeling that I wouldn’t be able to make music