Song of Songs (or Song of Solomon) is a book in the Old Testament. It describes the relationship between a man and a woman. This is thought to be an allegory for Christ's relationship with the Church.
Not sure about all of the songs from this movie (Kalka, 1983), but one song is available to listeners at http://radiovani.blogspot.com/2008/05/bidesiya-re.html Mr. yunus Khan might have rest of the...