They sing in English, French, Breton, Finnish, German, Dutch, Swedish, Latin, and Hindi, and play Celtic harp, mouth harp, hurdy-gurdy, bodhrán, guitar, bouzouki, didgeridoo, flutes of all kinds, bagpipes, various drums and percussion instruments.
Their music is very eclectic, and I do enjoy a good flute and some doo-doo-di-di-doo's.