Listen to Key Uthey Daki Mamo online. Key Uthey Daki Mamo is a Bengali language song and is sung by Rezwana Chowdhury Banya. Key Uthey Daki Mamo, from the album Khelar Sathi, was released in the year 2004. The duration of the song is 4:41. Download Bengali songs online from JioSaavn.