Listen to Hamjakma online. Hamjakma is a Kokborok language song and is sung by Bimal Debbarma, Janardhan Debbarma and Subhadra Debbarma. Hamjakma, from the album Dida Di Dong, was released in the year 2010. The duration of the song is 4:36. Download Kokborok songs online from JioSaavn.