Listen to Tasnif: Bi Delan online. Tasnif: Bi Delan is an English language song and is sung by Hesameddin Seraj and Jalal Zolfonoon. Tasnif: Bi Delan, from the album Rast Panjgah Concert: Seraj - Zolfonoon, was released in the year 2012. The duration of the song is 5:43. Download English songs online from JioSaavn.