Hey, I'm creating a video for my new Mac app. I will publish the video on Youtube and on my site. I'd love to use a decent song on it, but I wanna make the things right. I saw a Tik Tok parody by Barely Political and that gave me an idea. The melody is exactly the same as the real song. I found this on Youtube: http://www.youtube.com/watch?v=XqdiEX6UsqI Is that illegal to use the melody of a song on a commercial?