The three principle organisers of the event dance with their partners. Two of them featured in Sally Potter&rsquos acclaimed The Tango Lesson and are now celebrities. They perform to the music of Astor Piazzolla, the genius of modern tango who created complex orchestral music of great intensity and pathos. These dancers represent the new generation of tango or tango nuevo their choreography is characterised by movements of dazzling precision, a stylised, sterilised abstraction of desire or violence. There are no expressions on their faces. They are unbearably glamorous, their virtuosity has a hall-full of tango fanatics gasping. But where is the passion, the humanity of old tango danced in seedy streets by drunk poets in bowler hats and tragic whores with red mouths Not here. This is the avant-garde of tango a dance of estrangement, not intimacy, of alienation, not passion, of force, not delicacy. Tango for men with long hair and earrings and androgynous women in trousers tango for the twenty-first century. The dancers end not in a convoluted embrace, but at opposite ends of the dance floor, facing away from each other as the final chord of Piazzolla&rsquos Violentango crashes. The effect is devastating. The audience falls at the feet of their gods. I weep.