Listen to Jawani Mast Hai Dagar Zara online. Jawani Mast Hai Dagar Zara is a Hindi language song and is sung by Mohammed Rafi. Jawani Mast Hai Dagar Zara, from the album Vachan, was released in the year 1974. The duration of the song is 3:05. Download Hindi songs online from JioSaavn.