I almost always listen to these songs, i made an itunes playlist for whenever i play AoTTg. Occasionally, I listen to other things like Instrumental core, Lindsey stirling, etc.
Attack on Titan
Attack On Titan - Crimson Bow and Arrow - Guren Ni Yumiya
The Reluctant Heroes
Attack On Titan - Crimson Bow and Arrow - Guren Ni Yumiya (i like listening to these two songs a lot :3)
The Reluctant Heroes
Rittai Kidou
Counter Attack Mankind
Army Attack
E.M.A.
Megata Kyojin kuchiku
Nightcore - Me Against The World
Felix Retrorsum
MIST GUN NO THEME
ERZA TAI ERZA
PANTHERLILY
Two Steps From Hell - All Is Hell That Ends Well (SkyWorld) (sometimes i just skip to these songs, they are freaking godly)
Two Steps From Hell - Strength of a Thousand Men (Nero)
Two Steps From Hell - Blackheart (SkyWorld)
Two Steps From Hell - Blade Fighter
Two Steps From Hell - Bleeding
Two Steps From Hell - Dragon Rider
Two Steps From Hell - El Dorado (SkyWorld)
Two Steps From Hell - Big Sky SkyWorld
Venice Combat ACII
These songs get me pumped up like hell

though i generally do better when i am not listening to music :/