Sarah Willis meets star violinist Lisa Batiashvili preparing for her first performance in the Pierre Boulez Saal in Berlin and top concert hall acoustician Yasuhisa Toyota reveals how to create such a perfect acoustic.
For a related story, go to: http://www.dw.com/en/daniel-barenboim-conducts-opening-concert-for-pierre-boulez-saal-in-berlin/a-37813069