the original mappas film Alice to Therese no Maboroshi Kōjō revealed a animate music video of the film with the Miyuki Nakajima theme "Shin-on".

This is the first time the veteran singer has made a song for any anime or game.

https://invidious.varishangout.net/watch?v=BLAyr48ZLjc

the video shows how spectacular this film of mappa studies looks