Music by Kevin MacLeod. Available under the Creative Commons Attribution 3.0 Unported license. Download link:  https://incompetech.com/music/royalty-free/index.html?isrc=USUAN1100875

MacLeod's description:

Genre: Soundtrack
Length: 2:33
Instruments: Cellos, French Horns, Trombones, Violins, Marimba, Trumpets, Percussion, Oboes, Clarinets, Flutes, Basses
Tempo: 238

Big giant building piece starting in 6/4 alternating to 4/4 and back. Soaring ending with a lot of brass.
ISRC: US-UAN-11-00875
Action, Aggressive, Dark, Driving, Epic, Intense 2011