We love xkcd
olganunes.com
olganunes.com
which tracks the original discovery channel ad:
Either way, the 'boom de ya da' is very catchy and nice.
http://www.youtube.com/watch?v=5ExQGwF0Z3g
*edit: fixed link
But the tune of 'Heart & Soul' ( http://www.youtube.com/watch?v=Y8CSjDC18b0 ) isn't very similar to the one in 'I Love the Word'. Confusing.
Here's Hugh Laurie with his take of it, by the by!: http://www.youtube.com/watch?v=cHJRSKvbiXA
tl:dr All parts of the mountain song melody are in 'Heart and Soul.'
Impressive cast, too.
The voice might actually be Lessig purposely recording for this creation.
Maybe I should try to point them to xkcdexplained.com instead -- thanks for the hint!