Year 2 music: Laugh and Learn

During a music history lecture in my first year undergraduate study, the professor said that he's gonna play us some "Jew's harp music." I though to myself, "ok, sure...but what's a Jew's harp??" Since nobody asked, I waited for the music to start. To my surprise, the sound of the instrument is neither "Jewish" nor "Harp-like," my gut feeling was "what the? This is an absurd sound! I want to