I was listening to a mashup of Owl City’s cover of Waving Through a Window and the original one, and I noticed that Owl City’s singing sounds a bit electronic (??? Sorry, not sure how to describe it) like in their other songs. Then I thought: What if Evan and Jeremy are both singing Waving Through A Window, but they have different scenes and views for the lyrics. In the part of the song where they sing about falling out of the tree, what if in Jeremy’s view, it’s not a tree and he’s actually going to jump off a building, but after singing “Did I ever make a sound”, Michael stops him, but no one is there to catch or stop Evan. At that point, Jeremy stops singing and it’s just Evan now because someone found Jeremy or “waved back at him”.
Here’s the link btw https://youtu.be/VJ9VwxaIfGU
(Edit: Owl City doesn’t actually stop singing after ‘Did I ever make a sound’, but in my opinion Ben sings a bit louder at that point)
[Another Edit: Just to clarify, I don’t own the mashup]