Dama Dam Mast Qalandar (transl. Every Breath for the Ecstasy of Qalandar) is a spiritual Sufi qawwali written in the honour of the most revered Sufi saint of Sindh, Lal Shahbaz Qalandar (1177–1274) of Sehwan Sharif. The original poem was initially written by the 13th-century Sufi poet Amir Khusrow, then further modified by Bulleh Shah in the 18th century. It is said that this qawwali was adapted from the original prayer by Amir Khusrow, and was then modified completely by Bulleh Shah. Bulleh Shah gave an entirely different color to the qawwali, adding verses in praises of Shahbaz Qalandar and giving it a large tint of Sindhi culture. The poem includes a reference to the town of Sehwan, which is home to the Shrine of Lal Shahbaz Qalandar. The word "Laal" can refer to Jhulelal as a young man, or his red dress. With origins dating back 600 years, "Dama Dam Mast Qalandar" is a popular traditional Sindhi Sufi Islamic folk song across the northern Indian subcontinent, especially Punjab and Sindh, as well as Iran. Various renditions of the song have been composed and performed by numerous composers and singers over the years. From Wikipedia