by Sue Basko
These are easy instructions on how to register copyright on one song. You can register copyright on whichever parts are yours - the music, lyrics, and/or sound recording.
You can register at the U.S. Electronic Copyright Office online for $35 per song. This is their website, where you will read and follow the directions: http://www.copyright.gov/eco/
If you want more information on copyright on songs and on how to register a collection of unpublished songs with the U.S. Copyright Office, please see this series of 4 blog posts: