The oud, or arabian lute is a string instrument. The oud is pear-shaped. It's one the most important instrument of the arab culture. The lute had evolved from oud. This instrument it made of wood. The old-fashioned oud it had 4 pairs strings. In our time it has 5 pairs strings, but sometimes it has got a 6. string (This string just only). Oud hasn’t got bounds. Usually it has One bigger and two smaller sound hole.