Hailed as the most important Qawwali singer of the 20th century, Pakistan-born Nusrat Fateh Ali Khan introduced Western audiences to the unique vocal style on the soundtrack of Martin Scorsese's Last Temptation of Christ (1988) and in the haunting score of Tim Robbins's Dead Man Walking (1995) in which Kahn duetted with Pearl Jam leader Eddie Vedder. He composed the...