Listen to Introspection - Gahana Kusuma Dark Version online. Introspection - Gahana Kusuma Dark Version is a Bengali language song and is sung by Raja Narayan Deb and Sanjoy Das. Introspection - Gahana Kusuma Dark Version, from the album Abohomaan, was released in the year 2009. The duration of the song is 2:15. Download Bengali songs online from JioSaavn.