Bihu, the national festival of the traditional Assam, is definitely not marked as a religious festival. Three such fascinating festivals, observed at various times of the year, are the part and parcel of the traditional Bihu. Bohaag Bihu is celebrated in Baisakh or in the middle of April, Maagh Bihu is celebrated in the middle of January, where as the Kaati Bihu is celebrated in the month of Karthik or October. The foremost fiesta of Assam has a very old and ethnic history. Each Bihu marks a different distinguished and typical phase of the farming calendar. When the seeding time arrives, the whole Assam celebrates the auspicious Bohaag Bihu. It marks the New Year. The Kaati Bihu marks the end of sowing and transplantation of paddies. And last but not the least; the Maagh Bihu is another carnival which is observed at the end of the harvesting period.
The festival of fun and bliss, the Bohaag Bihu is popularly known as Rangoli Bihu. Maagh Bihu is renowned as Bhogaali Bihu and is known as a festival of food. Kaati Bihu, marked as a festival of the poor, is also called as Kongaali Bihu.
The arrival of the wonderful spring is enjoyed blissfully with Bohaag Bihu. The occasion is observed with the traditional dance form and folk songs. Bihu folk songs are popularly known as the Bihugeets. Bohaag Bihu continues for few Days. Young and energetic people form groups and walk around the village. They are dressed up in colorful and bright clothes. The pretty and beautiful girls dance to celebrate the occasion. "The young people in the village may be seen moving about in groups gaily dressed or forming circles in the midst of which the prettiest girls dance" (The History of Human Marriage by Edward Western-March). This kind of assemblage is known as Mukoli Bihus. The enchanting songs and music are popular among all the sections of the society. The special and spectacular carnival is full of romanticism and love.
The language of Bihu always refreshes the mind and soul. However, the language of Bihu has kept on changing. The songs of Bihu are composed in couplets and each of them invariably depicts dissimilar emotions and at the same time the songs are accompanied with characteristic and unique dance forms. This is the charm of this fantastic festival. The elegance and style of these songs are noteworthy. The language is quite simple and straightforward. Intellectual scholars believe and opine that the language of Bihu is definitely not influenced by the ancient Indian language, Sanksrit.
Bihu songs also have a lot of influences on the old and impressive Assamese literature. The impact of the language of Bihu songs on the rich Assamese literature is notable.
Mukoli Bihu, the predominantly popular festival, is not anymore observed with the warmth. However, a number of professional dance groups still perform Bihu songs on the stage of Bihu fairs. Bihu dances are the additional enticements.
Bihu Kunwori, the traditional contest, is still organized widely. Juvenile and young women include their names in the dance competition and the best dancer is honored and gets the title of Bihu Kunwori.
The popularity of the Bihu songs has now crossed the boundaries of states and nation. Every year new songs are out in the market. It shows the popularity and acceptance of the special and melodious music of Bihu.