Malayalam Song - Yesudas & Chitra. Which One ?

i am a great fan of Yesudas Sir. he is great. i am not a malayali. i regularly keep watching idea star singer. the other day i was watching it, i came across a song which was sung by Yesudas and Chitra. the contestants who sang it were some sudeep and karthika ( if i got the names correct). the guest on the show that day was Tilakan. the song, as far as i could make out was - MANIDARANGA TARANAM. or MANI TARANGA TARANAM. or VANITA RANGA TARANAM. i dont know the words, so pls excuse. pls decipher the lyrics. IT WAS JUST SUPERB. so melodious song. wonderful song. kindly let me know the film name, the starting words, so that i can search on the net. thank u