Celtic Woman is a female vocal ensemble that performs a mix of Celtic, New Age, and adult contemporary music. Often compared to such artists as Clannad, Enya, and Loreena McKennitt, Celtic Woman first rose to acclaim with an energetic stage show that shared much in common with similarly-minded productions like Riverdance (whose music director, David Downes, was the driving force behind Celtic Woman's formation in 2004). The group's first performance was filmed by PBS in 2004 and broadcast one year later, accompanied by a wildly popular CD and DVD. Although intended to be the group's only release, the album climbed to the top of the Billboard World Music chart and stayed there for a record-setting 81 weeks, thus setting the stage for Celtic Woman's long career.

Celtic Woman began touring heavily, sometimes logging as many as 35 weeks a year on the road. While a series of PBS specials ensured that the ladies remained on America's TV screens, additional album releases helped them remain on the charts. The holiday-themed A Christmas Celebration appeared in 2006, with A New Journey following in 2007. Both albums topped the World Music chart, and A New Journey even acheived some crossover success by peaking at number four on the Billboard 2000. Meanwhile, several members of Celtic Woman's shifting lineup also released solo albums, although none of them fared as well as the group's own records. Released in 2008, The Greatest Journey combined material from Celtic Woman's older albums with several new songs. It was followed two years later by Songs from the Heart, which found the group mixing some contemporary covers into its repetoire.

~ Matt Collar & Andrew Leahey, Rovi