129. "Bad Blood" (2014)
Melodically parched, lyrically unfinished, rhythmically clunky – this was a mighty strange pick for a single from an album as loaded as 1989. There are a million things Taylor has in common with Paul McCartney – one is that celebrity grievances tend to sound like a penny-ante waste of their time, even when they're totally understandable (unless you're a fan of Macca's "Dear Boy," where John Lennon is his Katy Perry). The single remix is improved by Kendrick Lamar – but he wasn't saving his A-game for this one.
Best line: "Band-Aids don't fix bullet holes."