A nonprofit organization organized the concert to highlight the preciousness of peace through music. The event had an audience of some 800 people.

Obama visited Hiroshima on May 27 last year, becoming the first sitting US president to set foot on an atomic-bombed Japanese city.

At the concert, pianist Mami Hagiwara, 30, third-generation hibakusha atomic bomb survivor, performed tunes such as "Ave Maria" and "Minute Waltz." A chorus was also presented by 26 students from a Hiroshima international school.

"It was a historic moment," Hagiwara said of Obama's Hiroshima visit.

"I could not watch it without tears," said Hagiwara, who became the first Japanese to win the first prize in the piano division in the Geneva international music competition in 2010.

Hiroshima suffered a US atomic bombing on Aug. 6, 1945, in the closing days of World War II. The United States dropped another atomic bomb on Nagasaki, southwestern Japan, three days later. (Jiji Press)