Lily & Madeleine are a folk pop duo who craft atmospheric tracks with the help of multi-instrumentalists. Shannon Hayden's pedal board-connected cello imparts ghostly hums, her mandolin pings delicate notation, and an extra guitar puts the punch in every crescendo. Kate Seifker's drumming is creative and lively; from a percussive cave she peppers xylophone chimes, eerie key pads and snare snaps. The presence of auxiliary musicians adds dense undertones to the sisters' piano folk. Though their ages hover around 20, Lily & Madeleine are effortlessly harmonious. Their "blood harmony" drifts in and out but cries out as one continuous voice. The sisters have brought their individual voices together with unmatched fluidity. Watch them perform tracks from "Fumes", the duo's newest release.