69. "Shake It Off" (2014)
A clever transitional single – great verses, grating chorus, pithy lyrics with a shout-out to her obvious inspiration, Robyn's "Dancing on My Own." As a lead single, "Shake It Off" might have seemed meager after 1989 came out – she was holding back "Blank Space" and "Style" and (Lord have mercy) "New Romantics" for this? But "Shake It Off" got the job done, serving as a trailer to announce her daring Eighties synth-pop makeover.
Best line: "It's like I got this music in my mind, saying it's gonna be all right."