HA! I had someone try to lay a copyright claim to one of my youtube videos. It had some background music that changed like 5x during a 2 minute video of my daughter and bulldog, they tried to say they should have the copyright to my video.... I disputed it under the fair claims act, stating background radio music that was 5-10 second sections of random songs on the radio in the background, didn't really count as a copy right infringement. (I looked up the law before disputing.) as soon as I disputed it, they stopped trying to lay claim to my video. I'm pretty sure they just did it because the video had over 5.5 million views, and thought they might make money off me if I didnt dispute their claim that all ad revenue should be theirs off the video....