Listen to Tum Itna Jo Muskura Rahe Ho online. Tum Itna Jo Muskura Rahe Ho is a Hindi language song and is sung by Jagjit Singh. Tum Itna Jo Muskura Rahe Ho, from the album Arth, was released in the year 1982. The duration of the song is 5:21. Download Hindi songs online from JioSaavn.