Music

Informative Wikipedia article about rights to digital content.

Not sure if your planned use of a created work constitutes fair use? Run it through this tool provided by Columbia University.

A resource for public domain and royalty free music. The "Copyright Law" tab provides very straightforward, music-specific information about the subject in plain English. There are multiple screens of information. Be sure to use the light blue arrows at the bottom of each screen to navigate through them.

A wealth of information from the U.S. Copyright Office.