Listen to Oka Mounam Oka Mounam online. Oka Mounam Oka Mounam is a Telugu language song and is sung by Harish Raghavendra and Karthik Raja. Oka Mounam Oka Mounam, from the album Garjana, was released in the year 2013. The duration of the song is 4:11. Download Telugu songs online from JioSaavn.