“I’ve committed well spent days driving parts of Highway 61 from New Orleans to Minneapolis,” says Jay Farrar. He roars up “Afterglow 61” again on Okemah and the Melody of Riot, the first new Son Volt album in seven years and one of Farrar’s best. Though he’s fronting a new Son Volt lineup at House of Blues on September 20, the band’s return to the Crescent City is something of a homecoming for Farrar. Back in 1995, when the original Son Volt was...