The Runaway String Band will perform from 7:30-9:30 p.m. Friday at Flat Iron Crossroads. The four longtime Williamsburg-area musicians use mandolin, guitar, five-string banjo, and the seven-string viola da gamba to create a mix of traditional and contemporary bluegrass, old time and swing, said a press release. From left, Lynn Trott, viola da gamba and voice, has been a member of several traditional and early music groups and is a lead vocalist in the 19th century band Southern Horizon. For years she has performed early popular music in the taverns of historic Williamsburg. Doug Austin, mandolin and voice, is a former member of the bluegrass ensemble Virginia Rail and a founding member of acoustic jam band Soy Hero. He also plays with Tin Can Fish Band. Barry Trott, guitar and voice, toured for 15 years with the early music trio The Virginia Company and is also a longtime performer of 17th and 18th century music. Dave Paddock, five-string banjo and voice, brings years of vocal experience to the group, has performed in a variety of vocal ensembles, including the Old Dominion Line barbershop quartet. Tickets are $10 and are available at Flatironcrossroads.com.