The Xavante people live in what Max describes as a "remote, completely primitive type place" deep in the jungle. They've had contact with the outside world for the past 50 years but had no idea who Sepultura were.

"They knew some white people, they'd seen some of the National Geographic people there, they'd seen the regular Brazilian people, which is not our case," says Max. "We show up with tattoos and green hair and red hair. It was cool. They thought it was like them; the reason why they paint themselves and stuff is to be different from the other tribes and stand out with their own original style. So I think in their eyes they think we do this with the same purpose, to be different from the other tribes here. Which kind of makes sense."

Sepultura had nothing prepared going into the collaboration. They started working on 3 songs and decided that they liked the third the best. After coming up with notes and percussion for it, Sepultura practiced with the tribe for three hours and recorded it that night.

"It was all live, because we had a car battery for electricity, but once we run out of electricity that's it," Max explains. "We got to record 8 different takes of the same song and when we got back to the States chose the best one."