Ah they do exist. Interesting: "You must have exclusive copyright rights to the material in the reference file for the territories where you claim ownership."

Ah they do exist. Interesting: "You must have exclusive copyright rights to the material in the reference file for the territories where you claim ownership." apparently not.. "The following examples are ineligible for use in or as a reference: Karaoke recordings, remasters, sound-alike recordings, and some dubbed content Sound effects, soundbeds, or production loops " Pretty sure a guy replicating music on a keyboard counts as a "sound-alike recording". "You must provide individual references for each piece of intellectual property." Warner has provided no references to speak of. I am no lawyer but it doesn't sound to me like Warner did their due diligence in following the rules here...