Just sharing my expirience with https://app.suno.ai/ (NOT COMERCIAL)
Epic Rock 

https:// www.youtube.com/shorts/yGgxreebb1k

Rap
https:// www.youtube.com/shorts/OSy_S67daU0
https:// www.youtube.com/shorts/hhjLXdHqWn4

Speed Metall 
https:// www.youtube.com/shorts/cxAEcWKMlYc
https:// www.youtube.com/shorts/tErsqcVJeuQ

For some reason the links are not working, 
if you are interested please copy the link 
and remove the space before www.
P.S. Have fun and share yours experiments.