Listen to Keno Bajao Kankan online. Keno Bajao Kankan is a Bengali language song and is sung by Biswarup Rudra and Rabindranath Tagore. Keno Bajao Kankan, from the album Patramadhuri, was released in the year 2009. The duration of the song is 4:20. Download Bengali songs online from JioSaavn.