The Celts
Born Eithne Ni Bhraonain, this classically-trained pianist was kid sister in the musical family that became Clannad, joining the Irish band in 1979 but dropping out amicably three years later to pursue her own muse. This music, produced in the mid-'80s as the soundtrack to a BBC series, was released as her debut in 1987 and promptly ignored--yet its mix of atmospheric soundscapes and Enya's lush, layered vocals, sung in both English and Gaelic, is the template for her subsequent global hits, beginning withWatermarkthe following year.--Sam Sutherland