Mask Ha Gazh, a Celtic music group from Brittany, France, was formed in 1998 by Luc Le Squer, Christophe Cantin, and Thierry Le Pollès. Their debut album, Tempête au comptoir, was released in 2001, the year of their first appearance at the Festival Interceltique de Lorient. In 2003, they released their studio album Alchimie. The band transitioned to professional status in 2005, performing extensively across France and internationally. Their studio album Sources, recorded in Nantes, was released in 2007. Notable achievements include the track "Mahoreagge" reaching number 2 on the French languag chart of Quebec radio station CKOI. They celebrated their 20th anniversary celebration in 2019.
