Folk songs are hereditary tunes that have been handed down through the ages in a certain neighbourhood, area, or culture. They are usually passed down orally, and they are frequently connected to the daily activities, experiences, and traditions of the individuals who originally carried them. A vast array of topics can be covered by folk songs, such as love, employment, social and political issues, historical occurrences, and more. These are mirror of societies and are directly proportional to the inherent cultural richness of that society. Bihar is culturally rich state which boasts of many vernacular languages, viz, Bhojpuri, Magahi, Maithali, Angika, Bajjika. Native speakers of all these languages carry a legacy of folktales, folk songs, and folk dances. In this paper, however, focus is on folk songs emanating from these different vernaculars and their significance as a medium of communication. The cultural values, accepted idioms, and practical significance of folk songs have a profound effect on rural society. Folk songs have the power to transcend communication obstacles such as language, speech, and words, as well as obstacles related to interest, comprehension, interpretation, attitude, and perception. One of the most significant tools for fostering national identity and social transformation is the folk song. Folk media may easily cover social issues associated to rural development, even though it may require significant change to effectively express social themes. Therefore, we must constantly and carefully protect our traditional media from the negative impacts of globalization to ensure its survival.