Michigan songbirds, Rachael Davis, Lindsay Lou and May Erlewine have each carved out successful careers on the American Roots Music circuit and have grown to respect each other's work. When they finally gelled into a potent musical force, it was natural three singing sirens and multi-instrumentalists whose repertoire swings from gospel and bluegrass to soul and even joyful interpretations of pop. Their three-part vocal harmonies are sublime, and they trade instruments including mountain fiddle and banjo, uke, guitar and double bass.