Listen to Swapan Parer Dak online. Swapan Parer Dak is a Bengali language song and is sung by Swapan Bandyopadhyay. Swapan Parer Dak, from the album Swapan Parer Dak, was released in the year 2006. The duration of the song is 3:43. Download Bengali songs online from JioSaavn.