Some may think it's the twanging guitar, pedal steel, and fiddles that characterize country, but at its core (and best), it's a singer's art, and Jackson is a latter-day master. The somewhat surprising choice of producer Alison Krauss fashions a smart and adult countrypolitan sound that spans from quality roots to classy pop, touching on blues, gospel, and even nods to composer Stephen Foster. With 15 songs one could even call literate -- in contrast to so much from the Music City songwriting factory -- this mature set transcends genre, becoming fine American popular music.