Swimmin' Time by hit folk duo C. A. Hearst and M. Trent hits record stores today. You can and should pre listen to it at NPR. Here's how they describe the album: "Swimmin' Time, the third Shovels & Rope album, also gets wet. Liquid runs through these songs, which mostly take place in the South, with its rising rivers and weak levees and mysterious sinkholes. The title track doesn't describe a vacation but an ominously creeping sea level, maybe one Hearst and Trent see on the estuary where they live in South Carolina. "Stono River Blues" speaks for a subsistence fisherman who remembers the slave rebellion that once took place on that coastal channel, while "Coping Mechanism" is a doo-wop song about intravenous drug use. In "Thresher," a philosophical ghost recounts a historic disaster, the sinking of a U.S. military submarine in 1963. There are also tales of people whose fates are as tricky as a current: petty criminals and homeless wanderers, happy couples who accept each other's faults, a man under arrest who dolefully declares, "I hit my kids, but I don't mean to."