> That can't possibly be a valid claim, right? It has indeed happened. https://boingboing.net/2018/09/05/mozart-bach-sorta-mach.html https://boingboing.net/20

> That can't possibly be a valid claim, right? It has indeed happened. https://boingboing.net/2018/09/05/mozart-bach-sorta-mach.html https://boingboing.net/2018/09/05/mozart-bach-sorta-mach.htm... Sony later withdrew their copyright claim. There are two pieces to copyright when it comes to public domain: * The work (song) itself -- can't copyright that * The recording -- you are the copyright owner. No one, without your permission, can re-post your recording And of course, there is derivative work. You own any portion that is derivative of the original work.