Krishnadasi was a soap opera that had a title track sung by the musician who specializes in what type of music?
Krishnadasi:  The title track was composed by D. Imman and sung by Nithyasree Mahadevan. Nithyasree Mahadevan: Nithyasree Mahadevan (born 25 August 1973), also referred to as S. Nithyashri, is an eminent Carnatic musician and playback singer for film songs in many Indian languages.
Carnatic