Sony, who have been so over-the-top in terms of protecting their intellectual property that they once created a virus stealthing technology in order to do so, has done it again.
Musician posts a video of himself playing a piece by Bach.
Sony posts a takedown notice.
Musician posts a counter-notice, explaining that it is him playing Bach, and Bach died 300 years ago, so it's out of copyright protection.
Sony says they own it anyway.
(After a wee bit of social media pressure, Sony finally backs off.)