Their 2005 debut album stayed at number one in the Billboard World Music Chart for a record-breaking 68 weeks, and they won over the world with their breathtaking harmonies and exciting live shows. To follow up on this success, Máiréad, Méav, Orla, Lisa, and Chloe went into the studio to record a collection of classic Christmas songs (including "O Holy Night," "Silent Night," and "The Little Drummer Boy") sung with an extra dollop of poignancy and good humor.