Pentakill skins dance Music

So, I noticed that when Pentakill Yorick dances, you can actually hear one of the Pentakill song on the Youtube channel of League of Legends. My point is just that why wouldn't there be a system like there was for the project skins? Like the more you have pentakill skins in one game, the more the loop of the song is long and if you have a full team pentakill, you can have the playlist of Pentakill instead of the normal summoner's rift music. Tell me what you think about it guys :P