The areas of law governing professionals and businesses in the entertainment industry, particularly contracts and Intellectual Property; more particularly, certain legal traditions and aspects of these areas of law that are unique to the entertainment industry. The entertainment industry includes the fields of theater, film, fine art, dance, opera, music, literary publishing, television, and radio. These fields share a common mission of selling or otherwise profiting from creative works or services provided by writers, songwriters, musicians, and other artists. Songs, plays, films, works of fine art, books, and even some choreographed works are copyrightable. The contractual terms that define the ownership and use of these works are often negotiated for months, with both the artist and the entertainment company vying for as much control of the intellectual property as possible.