Yuri Gause

what would be some composers and music that influenced this track? especially the brass parts? https://www.youtube.com/watch?v=HAfFfqiYLp0

Hey guys I"m relatively new to analyzing scores and I was wondering what methods people use. I just simply copy them down from the original ones, is that a good way? I"m curious for other methods to sort of get the melodic, harmonic and rhythmic language of the piece internalized. Best -Yuri