Bobby McFerrin gave a powerful demonstration on humans natural reaction to the Pentatonic Scale at the 2009 World Science Festival. The "Notes and Neurons" segment of the festival asked the question is our response to music hard-wired or culturally determined? Is the reaction to rhythm and melody universal or influenced by environment?
Look at this and be the judge.

World Science Festival 2009: Bobby McFerrin Demonstrates the Power of the Pentatonic Scale from World Science Festival on Vimeo.

The Pentatonic Scale is a musical scale with five pitches per octave. The Pentatonic Scale is very common and is found all over the world, including but not limited to Celtic folk music, Hungarian folk music, West African music, African-American spirituals, Jazz, American blues music and rock music.