The Rite of Spring by Igor Stravinsky almost caused a riot when it was first seen 100 years ago. The music, the choreography was so unusual and dissonant that the audience rebelled. There was laughter and fistfights. Today it has become a classic piece and is being celebrated on its centenary- yet eyebrows can still be raised when a puppeteer stages The Rite of Spring. Basil Twist and Dick Gordon speak on the day of a new world premiere.