(verb)

Definition: to hide (something) by covering it up or making it harder to see

source: http://www.merriam-webster.com/dictionary/camouflage

“How to Tell a True War Story”:

“what happens is, these guys get themselves deep in the bush, all comouflaged up, and they lie down and wait and that;s all they do, nothing else, they lie there for seven straight days and just listen.”

Even though the soldiers are cover up themselves, but the mysterious sound follow them, I can tell the music come from their heart, their mind.