Cumberland County Playhouse presents The Blue Eyed Bettys performing March 17 at 7:30 p.m. With Daniel Emond on banjo, Sarah Hund on fiddle, and Ben Mackel on guitar, The Blue Eyed Bettys delight with their folky-bluegrass sound. But what always seems to grab audiences immediately are their powerful vocals in three-part harmony. All actors by trade, The Blue Eyed Bettys met while doing a play together at the Florida Studio Theater in Sarasota, Fla.