Not a group but a show, "Celtic Thunder" is a collection of traditional and contemporary Celtic music at its finest. Featuring five male vocalists, the show was first staged in Dublin in August 2007, and has since been a mainstay on PBS stations. Contents: Caledonia; Come by the Hills; Heartland; Ireland's Call; The Island; Lauren & I; The Mountains of Mourne; Remember Me; Steal Away and more.