Don't worry, be a collective brain instead.

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

from the World Science Festival's website: "What Bobby McFerrin does is not an act; it’s spontaneous invention. He peers over the edge of the cliff, acknowledges the void below, and dives head first, buoyed by the element of surprise. Bobby uses dense rhythms, extraordinary scales, and complicated intervals that accomplished musicians and educators have studied and dissected.

For many people, the name Bobby McFerrin will always be associated with the first a cappella song ever to reach #1 on the charts in America, a feel-good ditty with an inspirational message: 'Don’t Worry, Be Happy.'

Bobby’s legendary solo performance and collaborations with artists including Yo-Yo Ma, Chick Corea, Ladysmith Black Mambazo, and The Vienna Philharmonic have toured the world. For Bobby McFerrin, music-making is an unending quest. 'Music for me,' says Bobby, 'is like a spiritual journey down into the depths of my soul. And I like to think we’re all on a journey into our souls. What’s down there? That’s why I do what I do.' "