Irish fiddler and the lead vocalist for the Irish folk music band Altan, which she co-founded with her husband Frankie Kennedy in 1987. Ní Mhaonaigh is recognised as a leading exponent in the Donegal fiddle tradition, and she is often considered one of the foremost singers in the Irish language, her native tongue. She was part of the Irish supergroup T with the Maggies who performed in January 2009 at Temple Bar TradFest in Dublin their first ever two concerts under that name and who released in October 2010 their debut album..
