Twelve centuries of Ireland's vocal tradition are explored by the chorale ensemble, Anuna. Best-known for their performance in Riverdance, the group combines songs in middle English, Scots Gaelic, Irish, Breton, Medieval Irish, Latin, and Greek in their examination of ancient and contemporary Irish music. In addition to performing and recording on their own, the group has worked with Sinéad O'Connor, the Chieftains, Sting, Maire Brennan, and Elvis Costello. According to the Belfast Times, "Anuna's live performances of medieval Celtic music have to be seen to be believed.....breathtaking...magnificent." Le Monde observed that "using crystal-clear and thunderous sounds, playing with shadows and light, the ensemble creates an atmosphere of fervent richness."