In May 2013, Anna Berit Asp Christensen contributed the sound installation The Singing Trees to the art exhibition Geist Glorup on Funen island, Denmark. The work, which was installed in a cluster of old chestnut trees, is based on lullabies collected from people who either personally, or via earlier generations, have frequented the Glorup Estate. The five trees have their separate compositions and together make up a choir of singing trees which—as a musical echo—“retell” the sound of the estate.