Please answer a question about the following article about Punjab, Pakistan:

The fairs held at the shrines of Sufi saints are called urs. They generally mark the death anniversary of the saint. On these occasions devotees assemble in large numbers and pay homage to the memory of the saint. Soul inspiring music is played and devotees dance in ecstasy. The music on these occasions is essentially folk and appealing. It forms a part of the folk music through mystic messages. The most important urs are: urs of Data Ganj Buksh at Lahore, urs of Hazrat Sultan Bahu at Jhang, urs of Hazrat Shah Jewna at Jhang, urs of Hazrat Mian Mir at Lahore, urs of Baba Farid Ganj Shakar at Pakpattan, urs of Hazrat Bahaudin Zakria at Multan, urs of Sakhi Sarwar Sultan at Dera Ghazi Khan, urs of Shah Hussain at Lahore, urs of Hazrat Bulleh Shah at Kasur, urs of Hazrat Imam Bari (Bari Shah Latif) at Rawalpindi-Islamabad and urs of Shah Inayar Qadri (the murrshad of Bulleh Shah) in Lahore.

What genre of music is played at urs?
folk