A girl in traditional bihu attire playing a 'Mohor Singor Pepa', (a pipe made from buffalo,s horn), on the occasion of Rongali Bihu in Sivasagar, Assam,on April 16, 2012. Rongali Bihu is celebrated in the first month of the Assamese calendar and thus marks the advent of the Assamese New Year. This festival also coincides with the advent of the spring season in the state. Bihu Dance and Bihu Songs are the main features of this Bihu, which continue for a month throughout the state. Photo by Luit Chaliha/Indian Photo Agency