Fingernails on Vibrating Strings
The nails of either hand can produce a buzz if applied lightly to a vibrating string.
If a continuous buzz is desired then care must be taken to not stop the string vibrating.
However, a transition from open string to buzz to choked pitch can be achieved by gradually increasing the pressure with the nail.
Dynamic Range: pp-ff
Special Notes: Can also be performed with bow wood/ bow screw.
Barry Guy Statements II