Imagine an entire genre of music, rooted in antiquity, that lies hidden to most of the world. Its traditions stretch back 700 years, yet few know it exists. Its beautiful melodies dip and soar. But no one is around to listen.

Such was the state of Qawwali in a not-so-distant past. Then came Nusrat Fateh Ali Khan, who opened the world’s ears to the rich, hypnotic sounds of the Sufis. Born to a musical family, Khan brought Qawwali from modest origins to international attention. He collaborated with, and influenced, countless musicians. And his endurance was astounding; some performances could last as long as ten hours!

Thanks to his legendary voice, Khan helped bring “world music” to the world. To celebrate his 67th birthday, let’s just listen.