Vairamuthu was born to Ramaswamythevar and Angammal of Mettur in a middle class family. When he was four, the village gave way to Vaigai Dam and the family moved to Vadugapatti village, a farming community in Theni near Periyakulam.
The ambience of the village is said to have inspired him to write poems.According to him, Tamil and Rationalist movements of the sixties stimulated his poetic zeal. The speeches of Periyar & Anna, the writings of Karunanidhi and the works of eminent poets like Bharathi, Bharathidasan and Kannadasan and the life in the countryside shaped the young poet's thinking. At the age of fourteen, he was inspired by Thiruvalluvar's Thirukkural to write a venba compilation of poetry, strictly adhering to the yappu grammar rules of Tamil poetry.
He joined Pachaiyappa's college in Chennai where he was acclaimed as the best speaker and poet. While in his second year of B. A. and barely nineteen years of age, Vairamuthu published his maiden anthology Vaigarai Megangal. It was prescribed for study in Women's Christian College. Thus, he achieved the distinction of a student poet whose work was taken into curriculum while he was still a student.
His second work, Thiruththi Yezhudhiya Theerppugal, in pudhu kavidhai (free verse) form was published in 1979. He made his film debut in the succeeding year when he set lyrics for Bharathiraja's Nizhalgal.

source : http://en.wikipedia.org/wiki/Vairamuthu