Definition of a Folk Instrument

A folk instrument is in of itself defined as either an instrument which has an unknown existence but is associated and developed amongst a nation or civilisation of common people, making it indigenous to that particular nation or culture, and usually doesn’t have a known inventor, OR is an instrument commonly used in or associated with folk music (indigenous music)

The didgeridoo is a prime example. It is an instrument indigenous to the people of northern Australia which was developed possibly 1 500 years ago (however, this is neither exact or definite) It is a wind instrument which is now commonly associated with Australian culture, internationally.