I see AI-generated videos where apparently the vocals are AI-generated - they've gotten scary good, the one I reference below to my ear sounds like an LA session singer.

I get that the video portion is AI-generated, what I wonder is if the rest of it is created by humans, surely AI didn't some up with such on-point rhyming lyrics, the catchy melody and chord progressions and the actual orchestration and generation of the sounds via some kind of synth or MIDI - or has it actually gotten that sophisticated?

This is the video that inspired my curiosity - it's a bit political but I'm just curious about the production aspects. How much of this is still human-created?