Josephine Marsh has quickly emerged as one of the world's best accordion players. A master of the East Clare, Ireland, style, Marsh was voted "best rookie of the year" and was a runner-up in the "best female traditional performer" competition conducted by Irish Music Magazine in 1997. The same year, Marsh's music reached a global audience when her original tune, "The Shepherd," was included in a National Geographic documentary on Ireland's great famine. British music magazine Folk Roots described her playing as "loose, free, spiritual, simple, light, joyous, flowing."
Marsh has been attracting attention with her virtuosic playing since 1990 when she released an album, To Meet a Friend, with bouzouki player Cyril O'Donoghue. Initially released on her own label, the album was re-issued as Josephine Marsh on the Tara record label in late 1995. The album remained in the Top Five of the Hot Press folk/roots charts from December 1995 until May 1996. Marsh's squeezebox playing has been featured on albums by Kate Purcell (A Dream Unfolds), Tim Flannery (Tim Flannery's Album), Gerry Lynch (The Dimming of the Day), and Sean Tyrell (The Orchard).
Born in London to Irish parents, Marsh returned to the home of her ancestral roots in 1971. After living for more than two decades in Broadford, a small village of East Clare, she then moved to Ennis.