2018, strings & a river & resonating box, Rządza, Poland Using the principle of aeolian harp I got sound representing the subcutaneous / hidden / deviously creative power of flowing water. The sound is soft enough to be inaudible more than a few meters from the river, and loud enough to hear every infinite detail when the ear is close to the receptor. This will allow you to establish intimate contact with the elements - strings can be touched, and the vibrations are felt and heard.