An instrument belonging to the bowed string family that resembles the common viola in size and shape. A notable exception is in the setup of the strings. Instead of four tuned steel strings, the graybola features only a
single string, untuned, and comprised of a
single, long strand of ass-hair. The graybola was made famous by rising folk prodigy, Zachary Addison. The instrument was most notably used in Addison's hit
single, "Over the Hill."