Listen to O Maa Kemon Maa Ta Key online. O Maa Kemon Maa Ta Key is a Bengali language song and is sung by Nirmal Mukherjee. O Maa Kemon Maa Ta Key, from the album Chayanika Shyamasangeet, was released in the year 2004. The duration of the song is 3:03. Download Bengali songs online from JioSaavn.