Listen to Thanka Theril online. Thanka Theril is a Malayalam language song and is sung by Kannur Rajan, K. S. Chithra and K.J. Yesudas. Thanka Theril, from the album Vadhu Doctor Aanu, was released in the year 1994. The duration of the song is 5:14. Download Malayalam songs online from JioSaavn.