I have an Italian citizenship.
My father made me think about moving there when I finish my studies,
but I told him that other than the fact I'll have to learn another language,
I've been told that the crime rate there is really high.
Also I wrote a final 5 points history work about Caeser and Augustus (100) so I know the ancient history of that era (-100 to around 30) very well.
But that's it.
Let me give it another listen.
It doesn't sound much like a concerto.
You probably know that "concerto" means solo instrument and a background instrument/group.
For example: concerto for cello and orchestra. There's a cello soloist and an orchestra accompanying him.
Here I heard only organ.
About the harmony melody etc:
it sounded like an organ piece.
So you scored that. Literally.
It feels a bit empty for me,
maybe because it's slow.
Upload the more developed version once you have it,
and please, when you do that, attach the music sheet with it.