Listen to Oka Nelavanka online. Oka Nelavanka is a Telugu language song and is sung by Chakravarthi and S.P. Balasubrahmanyam. Oka Nelavanka, from the album Manishe Mani Deepam Megastar Chiranjeevi Hits, was released in the year 2007. The duration of the song is 4:30. Download Telugu songs online from JioSaavn.