A ghostwriter is a writer who writes books, articles, stories, reports, or other texts that are officially credited to another person. Celebrities, executives, and political leaders often hire ghostwriters to draft or edit autobiographies, magazine articles, or other written material. In music, ghostwriters are often used for writing songs and lyrics. Screenplay authors can also use ghost writers to either edit or rewrite their scripts in order to improve them, increasing their chances to be optioned or produced. Also, ghost writers may work on accompanying documents, such as treatments for screenplays.Ghostwriters may have varying degrees of involvement in the production of a finished work.