The Jews harp is one of the oldest musical instruments in the world, particularly common among the Asian Turkic peoples and in Europe. Made from a variety of materials including metal and bamboo, it produces a drone effect. Over time centres of production and unique styles have emerged and, each of which has grown historically and became embedded in the regional folk culture. Since the medieval times Molln in Upper Austria is such a centre, where they even established a guild of jews harp makers (see Production of the Molln Jews Harp). Historically, the instrument played a key role in courtship and in convivial musical entertainment. In Austria, a style of play predominates where the player uses two to four instruments, differently tuned, either as a solo instrument or in a duet or trio, and mostly in combination with other instruments.