Kushan Gan is a kind of vibrant Folk drama, a dramatic presentation which involves singing, recitation of dialogue, acting and dancing in the accompaniment of Folk Music. It is one of the folk traditions of the indigenous Koch-Rajbongshi people of Assam, West Bengal, Bihar, Meghalaya of India , Nepal and Bangladesh. The theme of Kushan Gan is especially religious in nature and revolves around portion of the Ramayana particularly Ram’s sons Lob and Kush and derives its name from Ram’s son Kush One of the earliest translations of Valmiki Ramayan is Madhava Kandali’s “Saptakanda Ramayana” in 14th century in ancient Kamatapur during the reign of Koch Kings. There was a vibrant and popular folk tradition associated with Rama story in the region. As a result, Kushan-Gan became popular in Rajbongshi culture as a form of vibrant folk drama in order to explore, understand and comprehend the legendary figure Rama.On the other hand, the word Kushan means ‘to wipe evil’ (Ku-evil, Shan-to clean by wiping). This is supposed to be derived from the concept of destroying injustice which is the consistent theme of the Kushan Gan. Bena is the chief folk musical instrument of kushan Gan. The chief performer of the Kushan Gan is the Geedal who sings, provides narration and plays the traditional stringed instrument Bena.