Tuning key buzz
Production
The harpist plucks the string and then holds the tuning key close to it, making the string buzz against the metal.
Sound
The metal tuning key produces a loud metallic buzzing sound against the wire strings. On the gut strings the sound will be softer and will also have a shorter duration.
Notation
A tuning key buzz is indicated with the tuning key symbol and the noise symbol. The length of the buzzing sound is notated graphically with a wavy line.