I understand there are some music which is halal, and some which are haram.
I have heard, the genre I am about to ask you about is halal, but I'd like to verify if you don't mind. Would these be considered halal? This genre is usually referred to as "epic orchestral", mainly used to "make one courageous". You'll find it for training and war like movies.

Basically, according to many scholars, music that’s typical of “entertainment gatherings” (such as concerts) would be haram. I myself cannot make that assessment. If you make the genuine assessment that these types of music are usually found in entertainment gatherings, then it would be haram. And if you make the assessment that they are purely classical types of music that are not really typical of entertainment gatherings, then they are halal.