Listen to Bou Katha Kao online. Bou Katha Kao is a Bengali language song and is sung by Asha Bhosle. Bou Katha Kao, from the album Bou Katha Kao- Asha R.D.Burman, was released in the year 1988. The duration of the song is 4:54. Download Bengali songs online from JioSaavn.