Covering A Song Is Now Illegal?!!!

sidtastic007's picture

Covering A Song Is Now Illegal?!!!

You guys have watched my newest song cover, "My Songs Know What You Did In The Dark" right?
Well, now EMI Music Publishing just claimed that I made a copyrighted infringement. It's just a freaking song cover. My purpose is to show my performance on that song without a cost. Nothing more. Is that really wrong?
I need advise from someone who had dealt with this problem before. And if there is someone who knows about laws, that would be even better.
Seriously, I thought there's no wrong in making cover.