Had this CD about 10 years ago and I lost it. After searching the net today, I am pretty sure that the Artist is Maharajapuram Santhanam. Sad part is that I found lots of his songs but not the one I am looking for. My Tamil is not so good so I will try my best to write down the lyrics. The songs starts like this..

Raghu Naye Ga Ne,
Pada Yoga,
Rajeve Moolane Nerhe Naya Shreee
Raghu Naye Ga Ne

Thanks is advance!

It is available here:

http://www.musicindiaonline.com/#/search/clips/global!q=raghunayaka