NEW YORK (Kyodo) A Japanese woman who lost a son in the Sept. 11 terrorist attacks in New York and a group of gospel singers from Japan performed in a memorial concert Friday night in central Manhattan to mark the eighth anniversary of the incident.

Mari Sumiyama, 69, of Tokyo, played "Requiem," a duet composed by her husband Kazusada, 72, on the piano accompanied by a violin. The music was dedicated to their son Yoichi, who was 34, and others who lost their lives.

"I just wish my son could have listened while he was in this world," Mari said after the performance.

Female gospel group Kokoro sang a piece called "Imamo Isshoni" ("Still Together Now"), which includes lyrics from the Japanese version of the poem "A Thousand Winds," also arranged by her husband.