Shuyi Chiou's animation explains the implications of the Central Limit Theorem. To learn more, please visit the original article where we presented this animation in the New York Times - nytimes.com/2013/09/24/science/as-normal-as-rabbits-weights-and-dragons-wings.html .
The song is Franz Danzi's Wind Quintet Op 67 No 3 In E-Flat Major, 4 Allegretto, performed by the Soni Ventorum Wind Quintet (freemusicarchive.org/music/Soni_Ventorum/Franz_Danzi_Wind_Quintet_Opus_67). The narration is by Pathikrit Bhattacharyya. Further work by Ms. Chiou can be found at her site, shuyichiou.blogspot.com/ .
More animations and images can be found at creaturecast.org, a project supported in part by the National Science Foundation.