11 days ago I uploaded onto youtube some live recordings from Manchester and the next day I received an email from firstname.lastname@example.org
"Your video, The Joy Formidable Manchester Academy 2 15/10/11 Everchanging Spectrum of a Lie (Encore), may have content that is owned or licensed by EMI Music Publishing.
No action is required on your part; however, if you're interested in learning how this affects your video, please visit the Content ID Matches section of your account for more information."
I've had a poke around on wikipedia which says Warner Music Group who publish them are rivals with EMI so shouldn't it be WMG with the claim not EMI?
Any ideas why it's happened and has it happened before?