Theory on how this scene will be integrated in pt 2 and Glindas new song?

Ozma in Dillamond's History lesson

This is how they filmed the Elphaba falling from the building scene

Cynthia Erivo reveals she co-wrote a new song for Elphaba alongside Stephen Schwartz in "WICKED: For Good"

The Wicked Movie That Almost Was: Imagine No Songs, Demi Moore or Whoopi Goldberg as Elphaba—And It Came Out 25 Years Ago (Vanity Fair article)

Sing-Along Version of ‘Wicked’ Soundtrack Released

Clip of Ariana and Cynthia saying "Ozma" and then immediately pretending not to know what it is

I have to say, I was really impressed with both Cynthia Ervio and Ariana Grande

Wicked Sing-Along soundtrack (instrumentals) to be released on Dec 20

Kristin Chenoweth Is Fighting Homophobes Over 'Wicked'