The author of a song acquires copyright protection as soon as the song is fixed in any tangible medium. In other words, as soon as the song is recorded or written down, copyright protection exists. Registration with the Copyright Office is not required to secure copyright.
Even though registration is not a requirement for protection, there are several advantages to completing a registration. Most significantly, registration is necessary for works of U. S. origin before an infringement suit may be filed in court. Registration also serves as public notice of the claim of copyright, and if within five years of publication, registration will establish prima facie evidence in court of the validity of the copyright.