I sang this at a rite this weekend for a friend who needed warrior energy:
It is a song I first heard years ago that has become emblematic of some of my Rage Work. I am linking it rather than repeating it so that it is properly cited, etc. I have used it as a release several times and, having done some Rage related work earlier that day, the song just seemed come easily to me that night.
I could also see singing the chorus and the end to ramp myself up, although I have not felt a need to do that.