Wow that sounds challenging, and awesome. I hope things are going good or I’m curious to know how it went.
So the client wants the lyrics to appear as if they are in the scene itself? Like augmented reality? As I’ve seen some other lyric videos.
Only thing I can think of is more workflow tips—but slowing down the video first and making keyframes or timestamps of the switch in camera angles. Then animating along to the slowed down version.
If the client doesn’t mind, hopefully they’d still like to have just some of the text move at the same time as something in a scene, but only for part of the movement—then the lyrics will linger on screen for a bit to be readable