तुम इतना जो मुस्कुरा रहे हो Tum Itna Jo Muskura Rahe Ho Lyrics In Hindi– Arth तुम इतना जो मुस्कुरा रहे हो Tum Itna Jo Muskura Rahe Ho Song Lyrics In Hindi From Arth Movies sung by Jagjit Singh. The Song is written by Kaifi Azmi and composed by Jagjit Singh Music company Saregama. Read more