Born on 7th November 1980, Karthik started his professional singing career as a backing vocalist and has since been working as a playback singer. Karthik developed an interest in music, early in his life. He is a trained Carnatic music vocalist and has been training since his school days. An ardent fan of A. R. Rahman, Karthik's dream was to meet Rahman and sing for him. After a worthy wait , he got the opportunity to meet Rahman through playback singer Srinivas and was asked to sing the song "Nendhukittaen" from the film Star.