We Have Heard Of Ice Hotels,

that is where everything in the hotel is made of ice, 

like this one, but we have never heard of ice instruments, until now, they are made by American ice sculptor Tim Linhart, and they sound remarkably fine, but due to body heat from the players and the audience they were difficult to keep in tune, his answer?

build an ice concert hall! if you are lucky enough to be in the Lapland town of Luleå, Sweden on February 10 and 11 you can go to the Ice Music Festival and listen to Ice Music play, the video is a delight to watch, the obvious enthusiasm of Tim and the performance of Ice Music, a 1 mug of coffee watch.