I'm playing a live set in here:
It's surprisingly warm inside this thing, considering it's winter and this is on a frozen lake. Minnesota artists do a yearly "art shanty" project, and more than one of them have music. This one is called the "Vista Shanty," and is made by some friends of mine. My bandmates also participate and make a "bigloo" that is wired for sound and recording, but I haven't made plans to play in there this year. Tried that last year. They even had an underwater mic set up beneath the ice to capture the sounds of people walking on top of it last year.
A ton of people come out for this too; should be fun.
http://www.artshantyprojects.org/