Listen to Rakter Gaan O Patangoder Swapno online. Rakter Gaan O Patangoder Swapno is a Bengali language song and is sung by Rupam Islam. Rakter Gaan O Patangoder Swapno, from the album Mahanagar At Kolkata, was released in the year 2010. The duration of the song is 2:45. Download Bengali songs online from JioSaavn.