All songwriters should belong to a PRO (Performing Rights Organization). Their job is to make sure that every time a commercial radio station, television network, film, or live performance of your song takes place, that you are paid accordingly. They track down the money. There are three main PROs in Nashville you have the choice of affiliating with. Research them all and even consider scheduling a meeting to sit down and discuss things one on one with each organization. Then select the one that is right for you.
Regarding Copyright: Your song is copywritten by law the moment it is physically captured by writing or typing the lyrics and making an audio recording of the melody. For additional documentation, you may elect to register the song with the US Library of Congress. You can fill out the necessary forms and upload Mp3s directly on their site. However, many writers wait and allow the Publishing Company to register the song before it is recorded by an Artist.
