I have heard her perform a few times with only her acoustic guitar, in fact the first time was at the Celtic Connections Danny Kyle open mic stage a few years back, where as a winner she first received attention for her music. So this was the first time I have heard her with a full, high quality band and with a chance to add more depth to her sound.
Her new album release Tied to the Moon, explores earthier themes and she spoke of how women are tied to the moon's cycles, wheras men are tied to the sun.
(She might introduce her songs more I wondered.) http://rachelsermanni.net