Song generation is one of my favorite uses of AI. I bought a year of https://suno.com/ for around $4 a month on a black Friday special. It is back to the normal price now. I haven’t bothered to make many videos out of my “creations”. But I do appreciate being able to easily make music of pretty much all genres for to add to drone video, etc... without paying for royalty free songs or getting my videos on YouTube flagged for copyright violations.
The quality has gotten pretty amazing!
An AI song has already risen to the top of the country music charts.
Movies are next in about a couple of years time.