Abigail and Lily Chapin have been singing and performing together since they can remember. Growing up in a family surrounded by musicians, they probably couldn't help it. We met the sisters at a recent tour stop at the 9:30 Club…

The Big Surprise Tour -- a musical ode to string band fiddling, working man's music and American folk troubadours -- began earlier this month in New Hampshire and is headed down to Nashville.