Mr. Sadao Yamamoto was born in 1931 and was 14 years old when the atomic bomb was dropped on Hiroshima on 6 August 1945. He was approximately 2.5 kilometres away from the hypocentre when the bomb exploded. He has since become an advocate for the abolition of nuclear weapons through sharing his story. In 1970, he conducted the first performance of Ishibumi – Requiem for a Male Chorus, in honour of the first-year students who were killed in the atomic bombing of Hiroshima. It has been sung every year since, and to mark the 70th anniversary of the atomic bomb being dropped on Hiroshima, the original choir sang the requiem in 2015.