What is the author's tone in India Song by Marguerite Duras?

Each voice brings a different tone to the play. All have a sense of the surreal and detached. Yet another experimental element of India Song is Duras's use of four separate disembodied voices to narrate the story of Anne-Marie Stretter. While these voices are never identified specifically, Duras describes some qualities of the voices and the different manner in which each voice tells the story. These voices recall the story in bits and fragments, as they slowly come to remember various details and facts about it. While stage plays often have a character who serves as narrator to the central events of the play, it is unusual to have narrators who are never actually seen onstage, embodied by an actor.