Folk music may be difficult to define, but it is widely recognized as a genre with traditional, often rural roots that was originally passed down through generations through oral traditions. The origins of folk music are not precisely known, but they are believed to be as old as the very origin of the communities themselves. Often this genre is used to refer to music created as a form of original expression of a past culture, which according to its composers needs to be preserved. Because of this concept, folk music is often called "the music of the common people."