In his programme note, director John Fulljames remarked that “any opera has many layers of authorship”, and that is truer of American Lulu than most.Alban Berg compiled the original libretto for Lulu (1929–34) from two plays by Frank Wedekind: Erdgreist (“Earth Spirit”, 1895) and Die Büsche der Pandora (“Pandora’s Box”, 1904). At the time of Berg”s death in 1935 the third act remained incomplete.