With a dusty baritone as bright as an eternally lit jukebox and tattooed fingers around the fretboard of a rare guitar, Stephen Sanchez tunes into longing and love with the acuity of a tried-and-tested troubadour — yet he’s only 20 years old. Transcending eras, he writes the kind of songs that can play just as well from your parents’ vintage record player as they could from the main stages of festivals à la Bonnaroo. If somebody told you he just pulled up from the fifties in a gorgeous Caddy, you’d have a hard time disputing it.