HARDtalk is at London's Barbican Theatre to speak to the artistic director and lead principal of the English National Ballet, Tamara Rojo. Her new production, a ballet about one of the bloodiest conflicts in the 20th century, is part of an attempt to modernise what is often a rather conservative repertoire in ballet. She'd like to do the same with training and technique too, but with some of the stars arguing that ballet should be tough and a new generation of dancers who have gone through a demanding training in Japan and China beginning to flourish, can Tamara Rojo triumph over tradition?