In July of 2017 I was introduced to the Sound Stone & its creator Hannes Fessmann. "Central to [his] work is the fundamental nature of sound, matters of perception through time and space and the synaesthetic properties of the stones themselves."
Though my first try at playing it pales in comparisons to Hannes' 25+ year experience with these beautiful instruments, the resonance (on all levels) while interacting with this small piece was a remarkable experience. Check out my humble attempt HERE.
To truly experience the Sound Stone watch the master at work HERE.
And, for those of my German speaking friends, here is Hannes' website on his work in Sculpting Sound, Resonance and more.