N/A: Tori no Hoshi ~Aerial Planet~ Planet Symphony

[Dag]

The official site (http://nippon1.jp/consumer/torinohoshi/ , in "collaboration" -> 2nd tab)
has 3 of the songs, for those curious about it, and there is the "Niconico rip": http://www.nicovideo.jp/watch/sm2503435

Since the songs in this album are just image songs and not featured in the game, what value should "classification" have? "original work"?