Listen to Hum Bewafa Hargiz Na Thay - Unwind Version online. Hum Bewafa Hargiz Na Thay - Unwind Version is a Hindi language song and is sung by Mohammed Irfan and R.D. Burman. Hum Bewafa Hargiz Na Thay - Unwind Version, from the album Bollywood Unwind 2, was released in the year 2015. The duration of the song is 4:44. Download Hindi songs online from JioSaavn.