Altan

Altan are an Irish folk music group. They were formed in County Donegal in 1987 by lead vocalist Mairéad Ní Mhaonaigh and her since-deceased husband Frankie Kennedy. They brought Donegal's rich collection of Irish language songs and instrumental styles to audiences around the world, and they remain the world's foremost Irish traditional group with over a million records sold. They were the first traditional group to be signed to a major label when they signed with Virgin Records in 1994. Altan have established a large following in Ireland, UK, Europe, United States, Canada and even in Japan. They have worked with a wide variety of well-known musicians including Dolly Parton, Enya, The Chieftains, Bonnie Raitt and Alison Krauss.

source: Wikipedia