User blog comment:Exotoro/save your extended music now/@comment-4780559-20140805174955/@comment-860254-20140805190046

well, they own the copyrights to their music and have a say in whether or not they should be released or not. If they are on a soundtrack, then releasing them on Youtube hurts the sales of the songs, while allowing people to download them for free. I don't know why they care if it's not on a soundtrack though; at least people are listening to the songs.