https://arstechnica.com/tech-policy/2018/09/sorry-sony-music-you-dont-own-the-rights-to-bachs-music-on-facebook/

Sony Music Entertainment has been forced to abandon its claim that it owned 47 seconds of video of musician James Rhodes using his own piano to play music written by Johann Sebastian Bach.

Last week, Rhodes recorded a short video of himself playing a portion of Bach's first Partita and posted it to Facebook. Bach died in 1750, so the music is obviously in the public domain. But that didn't stop Sony from claiming the rights to the audio in Partita's video.