Katie Paterson recorded the sound of 3 glaciers (Langjökull, Snæfellsjökull and Solheimajökull) on Iceland. She then pressed those recordings on ice record made of melt water from those glaciers. The records were played on 3 turntables and it took almost 2 hours till they were completely melted. You can listen to one here.
found at I’m Revolting