A couple months back Granny passed away and in proper new age fashion many of her belongings were posted in a private group on face book through photo albums. Family got to go through them and choose what they would like to have. I, of course, was drawn to this cute little 'mortar and pestle'. Once it arrived, it was quickly realized that it was not a mortar and pestle at all but a Tibetan singing bowl.
To make her sing you take the little stick and run it around the outside of the bowl where the ridges are. It is something you either like or really dislike listening to. I happen to like it while the manthing finds it quite annoying. The video is of when I took her to the woods yesterday on my walk about.