Listen to Thani Avarthanam online. Thani Avarthanam is an Instrumental language song and is sung by M.P.N Ponnuswamy and M.P.N Sethuraman. Thani Avarthanam, from the album Nadaswaram, was released in the year 2000. The duration of the song is 4:12. Download Instrumental songs online from JioSaavn.