Ken Anderson and Rebecca Hall, of southern Vermont, are performing tonight at the central library, 6:30 pm. From the library Web site:

Conjuring the ancient, often haunting, ballads of the British Isles and their Appalachian counterparts, Rebecca Hall's compositions don't so much ignore modern songcraft as transcend it. Combined with husband Ken Anderson's old-school musical arrangements and '60s-era pop harmonies, the result is an altogether new, yet curiously familiar, style they call "retro folk."

The concert will be in the community room downstairs, near the computer lab.