Taylor Swift dropped her eighth studio album, folklore, and Swifties immediately began to speculate about the potential involvement of her boyfriend, Joe Alwyn? If not, let's recap: When Swift announced the surprise release of the album, she listed the artists she'd collaborated with, calling them her "musical heroes." Those artists were The National's Aaron Dessner, Bon Iver, William Bowery, and Bleachers' Jack Antonoff.