Author is broadly defined as the person who originates or gives existence to anything. The authorship determines responsibility for what is created. In the narrow sense, an author is the originator of any written work.
Author under the copyright law is the creator of the original expression in a work. The author is also the owner of copyright. However, s/he may assign the copyright to another person or entity, such as a publisher. In cases of works made for hire, the employer or commissioning party is considered to be the author.
Holding the title of author over any literary, dramatic, musical, artistic, or certain other intellectual works give exclusive right to authorize any production or distribution of their work.