Rufina Amaya was the sole living witness to the massacre of a thousand civilians at El Mozote during El Salvador's civil war. She died last year. Now a Salvadoran composer, Carlos Colón-Quintana, has composed a choral piece in her memory titled The Lamentations of Rufina Amaya. From his blog:
This is my latest composition: a work for chorus, children's choir, and chamber orchestra. This is a lament for all the victims of the civil war in El Salvador, specially those who died in the Massacre of El Mozote.
At the blog he has made selections from his work available in video and audio format.