Jew's harp
The Austrian composer Johann Albrechtsberger—chiefly known today as a teacher of Beethoven—wrote seven concerti for Jew's harp, mandora, and orchestra between 1769 and 1771. Four of them have survived, in the keys of F major, E-flat major, E major, and D major. They are based on the special use of the Jew's harp in Austrian folk music.