Max says that for a long time he had been interested in the cultures and customs of Brazil's various tribes. When a friend gave him a cassette recording of the Xavante people, Max made up his mind that he would somehow incorporate the tribe into Sepultura's music.

"I loved the tribes, their customs, their culture," he says. "It just blew me away, all the chanting, such a spiritual vise. When I mentioned it people thought I was all crazy. The only person that didn't was my wife, because she knows me and knows that I get these crazy ideas and I go all the way and nobody's stopping me. I get really obsessed."

Arranging the collaboration proved to be easy for Max, as he was able to find someone who handles relations with many of the tribes

"She got excited because right now there's a big struggling of the tribes to maintain their culture while the government thinks tribes should be wiped out and turned into modern society," he explains. "So from that point of view, it's good for the tribe, what they're doing with us. It makes them stronger and shows their art. So she was really excited about it and supportive."