“XO” is the final track on the album and reiterates themes found throughout the record but with an increased amount of pessimism and angst. This is done in a similar manner to other closers “The Patron Saint of Liars and Fakes” and “West Coast Smoker”. In this case, the "From Under the Cork Tree" themes of desperation and hopelessness reach a climax: the speaker of the song relentlessly searches for temporary lovers in the bar/club scene (“the crowd”).

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