Taylor Swift often writes "letter-songs" -- the verses are a note to a former lover. These songs are somewhat icy and cinematic; both parties behave badly, until the "house of cards" comes tumbling down. I think this technique is most impressive in "Getaway Car," in which Swift confesses to an ex that she has used him as a "vehicle" -- a means of escaping another relationship. "I wanted to leave him -- I needed a reason." The narrator is impatient with her interlocutor, who is just a bit disingenuous: "Don't pretend it's such a mystery. Think about the place where you first met me -- in a getaway car." It takes a certain boldness to pick up an installment from your own personal history and "re-fashion" the climactic scenes as an interlude from "Bonnie and Clyde." By contrast, in her own greatest achievement, Mariah Carey is writing just about herself. There is an ex -- but he is hardly a character...