From xkcd

Being nerdy at the sea…

Life is stranger than really weird shit. – eddie izzard

World Science Festival 2009: Bobby McFerrin demonstrates the power of the pentatonic scale, using audience participation, at the event “Notes & Neurons: In Search of the Common Chorus”, from the 2009 World Science Festival, June 12, 2009.

A pentatonic scale is a musical scale with five pitches per octave in contrast to a heptatonic (seven note) scale such as the major scale. Pentatonic scales are very common and are 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, Sami joik singing, children’s songs, the Greek traditional music and songs from Epirus, Northwest Greece and the music of Southern Albania, the tuning of the Ethiopian krar and the Indonesian gamelan, Philippine Kulintang, melodies of Korea, Japan, China and Vietnam (including the folk music of these countries), the Afro-Caribbean tradition, Polish highlanders from the Tatra Mountains, and Western Classical composers such as French composer Claude Debussy.The pentatonic scale is also used on the Great Highland Bagpipe. (source: Wikipedia)