This is a great version of the piece. Thanks for posting it.
If you ever get a chance to see "Evolución" an animation, it is set to Bolero. I saw it back in 1987 on screen which was great (much better than this grainy utube).
The correct name is: Allegro ma non troppo..by Bruno Bozzetto, 1976
[ame="http://www.youtube.com/watch?v=ldu7XinnJ84&feature=related"]YouTube - Bolero de Ravel y la Evolución (COMPLETO).flv[/ame]