Broken down to her most basic elements, Abigail Washburn doesn't sound like anything particularly new: Americana singer/songwriter, banjo player, Midwestern expat living in Nashville. We've all heard that story before — it's practically carved into the pavement outside the Bluebird. But then you start filling in the blanks between those bullet points. Like how her music deftly weaves together American folk anthems and a pronounced love of China, which comes out sounding like the score to Firefly. Or how she formed a band with virtuoso musicians Béla Fleck, Ben Sollee and Casey Driessen, and sang songs written in Mandarin. Washburn has the same warm, almost experimental appeal as Joanna Newsom, except without all that cloying forest-nymph baggage. She celebrates the vinyl release of her second album, City of Refuge, at Grimey's — her last local performance before shuffling down to Manchester for Bonnaroo.