Eraser
Production
Erasers are inserted between two strings close to the sound board. Other similar plastic materials can also be used.
Sound
The erasers mute the sound of the strings. The degree of muting depends on the size of the eraser. The sound can be very dry, almost similar to a percussionists dead-stroke, or only slightly muted and less resonant than a normal string.
Notation
A verbal explanation is required.
Range
The whole harp.