Initiated in Carnatic Music at age of 12 by V.L . Seshadri, Unnikrishnan was inspired by Sangita Kalanidhi Dr. S. Ramanathan who shaped him into a competent and complete Artiste of aesthetic and technical excellence. He now receives guidance from Savitri Satyamurthy and Calcutta Krishnamurthy. He has also acquired "Veenai Dhanammal Bani" from Sangita Kalanidhi T. Brinda and T.Viswanathan. He is the recipient of many Honours and Awards which include "Kalaimamani" from the Govt. of Tamilnadu, 'Best Raaga' award from Music Academy, 'Yuvakala Bharati' from Bharat Kalachar.
He has rendered concerts in all prestigious Sabhas in the country. His audio cassettes are most popular among rasikas. He is 'A' grade Artiste in AIR Simultaneously, his fame blazed in the film world as a play back singer for his renderings in two Tamil Films. 'Kaadalan' and Pavitra' which earned him the 'National Award' for 1994.