Kingdom Of Heaven Movie Trailer/Slow Druming Song?

Hi,I was watching the movie trailer for the movie Kingdom Of Heaven (not the teaser trailer version)but the theater version.Anyway,I'm talking about the part in the trailer where Orlando Bloom gets the sword soon after a nice slow druming plays.And as that nice slow drum song plays it shows the muslim leader holding his hand up and a person with a shinny mask slighty bowing his head all while the slow drum song is playing.Then the song seems to change after a few seconds to a chanting faster pace song.I'm intrested in the slow druming song I heard in that part of the trailer,any clues to who it might be?

, July 6, 2005; 5:24 PM