
There is an organ in Moscow. It's debatable how musical it is, but this video is pretty cool.
But this is the one I was actually looking for. Here's another.
There is an entire festival in Norway on ice music.
The tones that ice instruments make are different than cold instruments. They're also different than almost anything else. To me, they sound almost otherworldly.
But I can't imagine that it is comfortable to play most of them with the need for the instrument to stay cold and your hands needing to be warm.
They're beautiful though and I could see there being a certain level of honour involved in playing them.
R~