What makes Maestro by Auden Dar so angsty?

I would love to read something very angsty but I don’t want to read very dark romance including abuse, violence, devastating personal traumas, drug use and such things. I read someone feeling this story as deeply as Manacled and that is a story I can’t read, tried but had to stop. It has sexual abuse and is very dark in general.

Maestro is a very long book(over 700 pages) so I just want to get general idea if it’s something I can handle and want to read. I absolutely loved A love letter to Whiskey by Kandi Steiner which is quite heavy on angst. So without anything that spoilers the story would love to hear does it include things I listed above.

{Marstro by Auden Dar}