BEAST OF BURDEN ONCE A BEAUTIFUL GIRLFRIEND, MATTHEW SWEET AND HIS POP GIFT HAVE TURNED INTO AN ALTERED BEAST
Matthew Sweet is chuckling. At times, he’s even laughing. Sprinkle in some giggles, a chortle and an occasional “tee-hee,” and you pretty much get the picture: Matthew Sweet, one of the darkest songwriters in pop, is, in person, about as glum and gloomy as a high school cheerleader. “People always…