Idiofon (from the Greek. Ἴδιος - its + Greek. Φωνή - sound), or an impuriting instrument - a musical instrument, a source of sound in which the body of the instrument or part of it is not required to sound preliminary tension or compression (stretched string or string or stretched string membranes). This is the most ancient type of musical instruments. Idiophones are present in all cultures of the world. They are made mostly of wood, metal, ceramics or glass. Idiophones are an integral part of the orchestra. So, most shock musical instruments belong to the idiophones, with the exception of drums with membranes.