87-year-old folk singer Pete Seeger is not what you would call a musical superstar these days, when popular music is defined by a karaoke TV show and round after round of sultry teenage pop stars, but Seeger is enjoying something of a surge in popularity following the release of a Bruce Springsteen album made up entirely of Seeger songs. And if the album’s popularity says anything about music, it might be an echo of Seeger’s longheld belief that good music never goes out of style.