"Heer Ranjha" is a traditional Punjabi folk song that has been passed down through generations. The song's origins date back to the 18th century, when it was written by the famous Punjabi poet Waris Shah. The poem tells the tragic love story of Heer and Ranjha, two star-crossed lovers from different villages who fall in love despite the odds against them. The song's melancholic lyrics and soulful melody have made it a beloved classic in Pakistani and Indian culture.