"Unexpectedly, Billy Pilgrim found himself upset by the song and the occasion. He had never had an old gang, old sweethearts and pals, but he missed one anyway, as the quartet made slow agonized experiments with chords-chords intentionally sour, sourer still, unbearably sour, and then a chord that was suffocatingly sweet, and then some sour ones again. Billy had powerful psychosomatic responses to the changing chords." - Kurt Vonnegut
