In the conditional love song, two people have to pair off *without* pairing off. We in the audience see their chemistry--even if they themselves do *not* see their chemistry. The two halves of the song can be mildly antagonistic ("People Will Say We're in Love"). Or the duet can be reasonably peaceful--but with a "this-is-just-pretend" theme ("They Say It's Wonderful"). It's worth noting that Oscar Hammerstein wrote a disproportionately large number of conditional love songs. And--though Irving Berlin *apparently* wrote "Annie, Get Your Gun"--there is a persistent rumor that Hammerstein was "Gun"'s ghostwriter. My own favorite conditional love song is "I'll Know," from "Guys and Dolls." Ostensibly, the two leads are arguing. Sarah Brown insists that her lover will be a version of Ned Flanders. Sky suggests that love should be a bit less predictable. Sky quietly mocks Sarah, making reference to a...