The title of this piece was taken from a song by Krystyna Krahelska, who – in 1937 – posed for the most widely known monument of the Mermaid of Warsaw (sculpted by Ludwika Nitschowa). Krahelska was a scout, poet and songwriter. She was a nurse during the Warsaw Uprising and died on its second day. In the piece “The Moon Swims on a Sad River”, the image of Krystyna Krahelska has been made unreal by an artistic transformation. The artist combines post-photographic work (using graphic software) with key techniques of one of the most prominent Surrealists, René Magritte. These two aesthetics appear to be surprisingly similar. The end result is an atmospheric scene depicting a woman and a river, which exposes the processes behind the creation of photographic images.