Listen to Thangachi Ponnu online. Thangachi Ponnu is a Tamil language song and is sung by S. P. Balasubramanyam and Vani Jayaram. Thangachi Ponnu, from the album Kizhakkum Merkkum Santhikkindrana, was released in the year 1979. The duration of the song is 4:52. Download Tamil songs online from JioSaavn.