I'll try disputing it and see what happens. Maybe it just claimed it because of some other music box audio that someone has in youtube's system. Which is stupid that they can even claim something like that since many music box songs will sound similar. This is what the claim said:
Music Box For Suspenseful Scenes - Vasya Sakal
Content owners: HAAWK for a 3rd Party
And hit the video so obnoxiously that I can't even use youtube's tools to edit the music.