This must be from the inherited collection. I'm not saying I didn't buy this, because it's exactly the kind of thing I would buy just for the oddness of it--but I'm pretty sure I didn't buy it myself. This is an album of music for contest twirling--the contestants were to use it to practice for the actual contest.
I'm not sure why anyone who was not a twirling contestant would have bought this. Every time I look at this I think that someone, somewhere missed an opportunity at creating yet another weird anime movie.