Both the song and music are so old that copyright law does not cover them.
It is Public Domain.
Both the song and music are so old that copyright law does not cover them.
Public domain, for more than a century. What could still be protected is a modern arrangement.
Both the song and music are so old that copyright law does not cover them.
Key has been dead for 170 years, so it's long since been in the public domain.
The song was originally put into the "public domain" so there is no copyright on the song itself. HOWEVER people who have recorded the song would own the mechanical and/or publishing rights, so for any specific recording of the song there will be a rightsholder.
No, it is in the public domain.
No one. It's in the public domain.
Works no longer protected by copyright are said to be in the public domain.
Pubic domain occurs naturally when a copyright expires. In theory, a copyright owner can intentionally disclaim any power to enforce a copyright, making it as if it were "public domain".
Nobody. It's public domain.
When a copyright expires, the work enters the public domain. In the public domain, the work is no longer protected by copyright law, and anyone is free to use, reproduce, or modify it without permission or payment.