The group first performed together in 2007 at a tribute concert to folk singer and guitarist Mícheál Ó Domhnaill, older brother of Triona and Maighread, and released their debut album in October 2010.

Mairéad (who was a member of a short-lived group Ragairne, with Enya) has been the front-woman, singer and a fiddle player with Altan, which she founded with her late husband Frankie Kennedy.

[2] In May 2007, Irish folk musicians from around the world gathered in Dublin to celebrate the life and music of singer Mícheál Ó Domhnaill, who had died the previous July.

At Temple Bar TradFest 2009, the group performed in Dublin on 31 January 2009 their first ever two concerts under the name "T with the Maggies" respectively at the Ark Children's Theatre (2.00pm) and at the Button Factory (8.00pm).

They were commissioned to record the folk song "Two Sisters" by Sam Shepard for his play Ages of the Moon, which opened in New York and Dublin, starring actors Stephen Rea and Seán McGinley.