Norwegian percussionist Terje Isungset has for years used a variety of organic sound elements in creating music and instruments. He has incorporated the sound of naturally found wood, stone, metal objects, and industrial machines and processes in the creation of musical works. But his certainly coolest instruments are his ice instruments - made from solid blocks of pure ice, some of it more than 450 years old glacier ice! He is not only making them but also uses them to produce the most beautiful recordings of ethereal sounds and serious music under harsh and extreme conditions.
His series of ice concerts takes this one step further by presenting the same concept live, using fragile instruments with very quiet sound output. For you to get a better idea of what these amazing instruments actually sound like, Isungset has made some mp3's available on his website. Here you can listen to an Ice Trumpet and some Ice Percussion - and you got to watch some amazing videos here and here.
You Tube also has performance vids available