Yes, this is the Adibashi ( or Migrant Tribal) culture of Assam. They are
an integral part of Assam. Assam owes its Tea Economy to them. Once upon a time they came from Bihar and Chotanagpur to this land of thousand cultures as Migrant Laborer to help British set up Tea gardens and produce Assam Tea.
After a hard days work let there be Song and dance – obviously in a Highly Spirited Mood.