Cool instruments, warm sound

Norwegian composer Terje Isungset crafts and performs on instruments made of ice, including a trumpet made from a 2,500-year-old piece of glacial ice. The sound of ice instruments is "surprisingly warm," Isungset finds. The Guardian has the story, plus an audiovisual sample:

http://www.guardian.co.uk/music/2008/dec/03/classical-music-ice-trumpet