The Copyright Act allows for copyright on the following types of works:

literary works;

musical works, including any accompanying words;

dramatic works, including any accompanying music;

pantomimes and choreographic works;

pictorial, graphic, and sculptural works;

motion pictures and other audiovisual works;

sound recordings; and

architectural works.

In addition, you can register other works such as computer programs and semiconductor masks.

Registering your copyright ensure that you can bring a timely lawsuit if someone is infringing your work, and early registration increases the amount you can recover in a suit by enabling you to recovery statutory damages.