Bobby McFerrin Demonstrates the Power of the Pentatonic Scale Play Bobby McFerrin Demonstrates the Power of the Pentatonic Scale Tuesday 4 August 2009 Last updated on Tuesday 4 August 2009 Posted in: linklog Permalink See this post on Wayback Edit on GitHub https://stream.anglepoised.com/post/155567905/world-science-festival-2009-bobby-mcferrin