A public domain song is a work to which copyright protections do not apply. As a result, that work can be used by anyone for any use, without a license or an agreement. This could be because the rights expired, have been waived, have been forfeited, or are not applicable. Most works enter the public domain when their copyrights expire. Typically, in the United States any songs that were published in 1926 or earlier are in the public domain. Examples of public domain songs are traditional folk songs and hymns like "Swing Low, Sweet Chariot" and "Amazing Grace" are in the public domain. The vast majority of registrations are not public domain songs.