Unnikrishnan started learning Carnatic Music from Sri VL Seshadri and later with Sangita Kalanidhi Dr. S Ramanathan, Calcutta Sri KS Krishnamurthy and later Smt Savitri Satyamurthy. Still continues the training from Stalwarts like Padmashri PS Narayanaswamy and Prof SR Janakiraman.
He has been performing Carnatic Music Concerts and Film Music Concerts and Film Music Concerts for the Past 25 years in India and abroad. He also collaborated with many Western and Jazz Musicians.
Sri Unnikrishnan has received many awards and titles from India and abroad including "Kalaimamani" from the Goverment of Tamil Nadu. He is an "A" grade artist of All India Radio.