As with many questions of copyright the answer is... it depends. There are several versions of the song and elements can be traced back as far as 1891.
The easiest way to answer is that any lyrics composed after 1923 are probably still under copyright protection (assuming of course the proper paperwork was filed and renewed) As to the music, there is a good possibility that it does reside in the public domain since, according to "The Rural Roots of Bluegrass by Wayne Erbsen" (pp 130-31), the tune may have been "borrowed" from "Swannanoa Town" collected by Cecil Sharp in 1916.
Yes. Unless stated otherwise by the musician or studio, songs are always copyrighted. Songs from before 1923 might have falled into the public domain.
The carol itself is in the public domain, but certain arrangements, performances, and recordings can still be protected.
You most likely will not find much popular music for free on the web, because it will be copyrighted. Music is automatically considered copyrighted until the composer has been dead for 100 years. After the composer has been dead for 100 years, the music is then considered to be in the public domain, which means it can then be used for free. Music like Christmas carols or church hymns are in the public domain, and should be available for free. The one catch with public domain music, is that if someone makes an arrangement of a public domain piece of music, their arrangement is considered as being under copyright, so that arrangement is not in the public domain, even though the original melody was.
The pieces of music themselves are not copyrighted, they are in the public domain. However, a PERFORMANCE of the National Anthem may very well be copyrighted. You could use the TUNE of a National Anthem in a newly composed piece, but you could not use someone's arrangement of the National Anthem without their express, written permission.
It will be difficult to find free sheet music for popular music, because most of it will be copyrighted... music is copyrighted until the composer has been dead for 100 years. After the composer has been dead for 100 years, the music is then considered to be in the public domain, which means it can then be used for free. So, music like Christmas carols or church hymns is in the public domain. However, if someone makes an arrangement of a public domain piece of music, that arrangement is now considered copyrighted by the arranger, and that arrangement is not in the public domain until the arranger has been dead for 100 years.
Unless specifically from public domain works, anything and everything on YouTube is copyrighted.
People aren't said to be either copyrighted or in the public domain.
If something is in the public domain, then it is not copyrighted. Creative commons also has a license for any software developer who wants to let others reuse their code.
No, it is in the public domain.
This music in in the public domain. Nothing from 1876 is still in copyright.
No it is not. It was copyrighted 1951. Any song with a copyright after 1922 is not in the public domain.
Her work would be copyrighted.
Both kinds of information appear on the web, although copyrighted content is more common.
Eukaryote
Check the back of the card. In most cases it is going to be copyrighted. There is a chance that they are using something that is public domain.
Works in the public domain are not protected by copyright.
As a "traditional" song, the author and date of the original work are unknown, and it is considered to be in the public domain. However the various performances, adaptations, and recordings of it may still be protected. (For example, the 2005 version by Eminem would be copyright 2005.)