Listen to Ar Koto Kal Thakbo Bondhu online. Ar Koto Kal Thakbo Bondhu is a Bengali language song and is sung by Samima Sarkar and Imrul Samad. Ar Koto Kal Thakbo Bondhu, from the album Alomoti, Pt. 01, was released in the year 2007. The duration of the song is 7:43. Download Bengali songs online from JioSaavn.