Emi Evans has a beautiful voice, but in the game menu, we can only hear this off vocal version.
In the OST, "神降" is available in Vocal version only.
Unlike the other song "空音", the second loop of "空音" is Off Vocal.

サウンドトラックに収録しない。

OST裡只有Emi Evans伴唱的「神降」，沒有了遊戲選單時的Off Vocal版本。
反而另一首歌「空音」，頭段是Emi Evans伴唱，尾段重復時是Off Vocal的。