Jaw's harp

Jew's harp App, also known as the jaw harp, mouth harp, Ozark harp or juice harp

The Jew's harp, also known as the jaw harp, mouth harp, Ozark harp or juice harp, is a lamellophone instrument, which is in the category of plucked idiophones: it consists of a flexible metal or bamboo tongue or reed attached to a frame. The tongue/reed is placed in the performer's mouth and plucked with the finger to produce a note.