Listen to O Mmu Beno Mmu online. O Mmu Beno Mmu is an Unknown language song and is sung by Ladysmith Black Mambazo. O Mmu Beno Mmu, from the album Africa in Harmony: 50th Anniversary Edition, was released in the year 2014. The duration of the song is 2:40. Download Unknown songs online from JioSaavn.