Everybody wants it!
I remember hearing claims that "Happy Birthday To You" is now under copyright even though the original sources are dead/unknown and that (for example) restaurants had to pay royalties each time customers sang the song when a cake is brought out for a celebration.
I've just checked and I think this is part of a newly emerging field termed
Copyfraud.Copyfraud is a form of copyright misuse. The term was coined by Jason Mazzone, a Professor of Law at Brooklyn Law School, to describe situations where individuals and institutions illegally claim copyright ownership of content in the public domain and other forms of overreaching by publishers and others who claim rights that the law does not give them; these actions carry little or no oversight by authorities or legal consequences. Mazzone pointed out ways in which copyright overreaching interferes with the public's legitimate use and reproduction of works, discourages innovation and free speech, and creates costs.
http://en.wikipedia.org/wiki/CopyfraudSony can perhaps claim royalties if someone plays their own particular
recording of "Hymn to Liberty", but that's all. The music and lyrics belong to the creators and their descendants (if they renew). But even then, Sony would not have paid the writers copyright once it's in the public domain, so why should anyone pay them?
As the article implies, they prey on the unwary.
Naughty, naughty Sony! Wasn't this the company that was nasty to George Michael?