This is about having respect for the civilization, or civilizations which lived in your neighborhood before yours arrived.
The music combines influences from
1) Southwestern native tribal chant (A sections)
2) hints of Mexican Mariachi (C sections)
Southwestern native tribal chant on youtube
https://www.youtube.com/watch?v=BFPloBBTw-Q
"The West" documentary produced by Ken Burns
http://www.pbs.org/weta/thewest/program/
