Listen to Hum Jab Simat I online. Hum Jab Simat I is a Hindi language song and is sung by Ravi, Mahendra Kapoor and Asha Bhosle. Hum Jab Simat I, from the album Waqt, was released in the year 1965. The duration of the song is 5:31. Download Hindi songs online from JioSaavn.