Listen to Thettu Thettu online. Thettu Thettu is a Malayalam language song and is sung by G. Devarajan and K.J. Yesudas. Thettu Thettu, from the album Golden Hour - All Time Hits - G. Devarajan Vol - 15, was released in the year 1999. The duration of the song is 2:44. Download Malayalam songs online from JioSaavn.