In Sarajevo twenty years may have passed but for many the suffering endured by this city remains undiminshed by time.
11,541 people were killed here during the Bosnian war.
Each empty red seat laid out before this anniversary concert a poignant tribute to each victim - a river of red flowing for more than half a mile through Sarajevo's central street.
For three years and eight months, Sarajevo was a city under siege. For the trapped civilians daily life was a fight for survival.
Colonel Bob Stewart was the British Commander of United Nations forces in Bosnia. He believes the international community should have done more.
Back in Sarajevo a new generation is determined to learn from the lessons of the past.