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Here's an MP3 of the sounds made by Iceberg B-09A in Antarctica. It was recorded by scientists from Germany's Alfred Wegener institute for polar and marine research, as they recorded seismic signals to measure earthquakes and tectonic movements on the Ekstroem ice shelf on Antarctica's South Atlantic coast.
From the Wegener Institute press release:
Tracking the signal, the scientists found a 50 by 20 kilometer iceberg that had collided with an underwater peninsula and was slowly scraping around it.
"Once the iceberg stuck fast on the seabed it was like a rock in a river," said scientist Vera Schlindwein. "The water pushes through its crevasses and tunnels at high pressure and the iceberg starts singing.
The iceberg sounds were originally recorded at 0.5 hertz, far below the range of human hearing. The MP3 here is speeded up many times to bring the sounds into the audible range.