Some songs come from deep, personal, confessional places, some are the result of staunch and soldierly workmanship, and some are just off-the-cuff toolin' around. Some took years to write, like the six-year-long odyssey that created Queen's magnum opus, "Bohemian Rhapsody." Others, like "Fortunate Son" by Creedence Clearwater Revival (with John Fogerty as the writer), took a mere 20 minutes to write, no matter how it brewed during the political currents of the day. And sometimes, a song's backstory is just as interesting as the song itself, if not more so.

Take 2007's "Love Song" by Sara Bareilles. The simple, saccharine piano bopper is made vastly more interesting when you learn that the track was her own, personal "f*** you," as Glamour quotes her, to the music industry's machinations

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