Listen to Flashback Bangla Gaan online. Flashback Bangla Gaan is a Bengali language song and is sung by Alaap Bose, Sandipan Gangopadhyay and Brishtilekha Nandini. Flashback Bangla Gaan, from the album Flashback Bangla Gaan, was released in the year 2023. The duration of the song is 8:02. Download Bengali songs online from JioSaavn.