This is one of the coolest (no pun intended) sound design projects ever. Marlin Ledin rode his bike and camped around the Apostle Islands of Lake Superior covering about 150 miles on the ice recording the creaks and groans of the shifting ice plates. Listen to his recordings and checkout photos and videos of his expedition at www.bikingtheapostles.com. Marlin describes the ice sounds:
The Lake Drums, as some people call them, are an amazing phenomenon that rank right up there with Aurora Borealis. Lake drums, or drumming perhaps, occurs when a shift in the ice creates friction between sheets of ice, like tectonic plates of the earths crust. The unique sounds created come after these shifts in the ice. I ventured out and captured some of these sounds with modern recording techniques.
I have been re-reading articles on Generative music in 
My brother Anthony Caston is visiting from the UK with his wife Sheena, daughter Lucy and son Dougal. At just sixteen years old, Dougal is an accomplished jazz saxophonist who has already had the opportunity to perform and audition with several well know jazz musicians. 
Here’s the piano from the last entry without the distortion applied. I left on all the other processing including limiting, stereo chorus and reverb. Now you can hear why I was not happy with the original recording. The recording is a bit noisey and although I used a nice mic (AKG c4000b large diaphragm condenser), the piano is quite old and suffers from a thin sound along with knocks and rattles that occur when using the keyboard and pedals. One might hear these features as the instruments character, but that rational only goes so far. I do like how limiting is manipulating the dynamics in the example. Adding the stereo chorus and reverb blends much of the rattling and knocks into the overall sound while the limiter expands the noise as the sound decays.