Carving Carrara marble.
 

You can, as I did, enjoy this for the combination of carving marble and the music, the end result is not so wonderful IMO but it is still marvellous to see how it's done.

https://youtu.be/OzAFILwcXlM

I agree about the final result, it's pleasant enough but kind of ordinary. Watching this done with power tools was very interesting. It's amazing that something so delicate is produced with a chainsaw to start.