Music to fight to.

[C117]

Sephiroth Theme from Advent Children, especially when the guitar-solo starts.

Other choices:

Crownless - Nightwish
Miracle Matter - Kirby 64
Tom Nook's Store - Animal Crossing
Steep Slope - Rungran
Thank You For the Venom - My Chemical Romance
The Way It Ends - Prototype

 

[Nietz]

If sober and pissed off:
"Kick dem down" by Enduser

If sober and well centred:
"Nuclear summer" by Youngblood Brass Band

If piss drunk:
Mostly anything...

 

[Dapsen]

There's too many songs to pick from, but i saw someone saying Disturbed's "Indestructible", so I'll just pick that one.

 

[Chogg Van Helsing]

simple

 

[Duck Sandwich]

"OMG EPIC FINAL SHOWDOWN!" music

For when you're just plain pissed off...

Georges St. Pierre is not impressed by your performance
Badass battle theme for an equally badass fight
The most badass song of all time