Bray harp
The Gothic harp from the 15th and 16th centuries had bray pins attached to the soundboard at the bass of each string and was heard all over Europe during the Renaissance. It was used for accompanying court songs and sacred music, and also in dance music of the time. These bray pins were wooden pegs, which held the gut strings in place and lightly touched them, causing a penetrating buzzing effect. This buzzing would have been familiar throughout Europe for several hundred years.
Ruth's bray harp is made by Ardival Harps in Strathpeffer.