Khan's experimental work for Real World, which featured his collaborations with the Canadian guitarist Michael Brook, spurred on several further collaborations with a number of other Western composers and rock musicians. One of the most noteworthy of these collaborations came in 1995, when Khan grouped with Pearl Jam's lead singer Eddie Vedder on two songs for the soundtrack to "Dead Man Walking". Khan also provided vocals for "The Prayer Cycle" which was put together by Jonathan Elias, but died before the tracks could be completed. Alanis Morissette was brought in to sing with his unfinished vocals. In 2002, Gabriel included Khan's vocals on the posthumously released track "Signal to Noise" on his album "Up".