Der Nibelunge liet

Anonymous works are works, such as art or literature, that have an anonymous, undisclosed, or unknown creator or author. In the case of very old works, the author's name may simply be lost over the course of history and time. There are a number of reasons anonymous works arise.In the United States, anonymous work is legally defined as "a work on the copies or phonorecords of which no natural person is identified as author.