Philip Moore (vocals and guitar) and Beth Tacular (accordion and vocals) first met on the job at a Whole Foods in North Carolina. They actually became a couple before becoming two-thirds of the ethereal, acoustic-folk band (with an artistic bent) Bowerbirds along with Mark Paulson (violin and vocals). The Raleigh, N.C., trio’s first album, Hymns for a Dark Horse, featured earnest (rather than ironic) folk music—not to mention the accordion and a marching-band bass drum. Their follow-up, the rustic Upper Air, in the vein of a more upbeat Iron & Wine record, came out in 2009. And the band’s third album, this year’s The Clearing, recorded in a North Carolina cabin and Bon Iver’s Wisconsin studio, finds Bowerbirds (above, playing “Overcome with Light” for WNYC FM) working with a much bigger sound than that of the previous two discs. This new music especially comes across well live. See for yourself tomorrow night at Music Hall of Williamsburg.