Sandstorm by Darude would be high on my list. Doesn't matter where I am or what mood I'm in when I hear this song, I get pumped up. Or along the same lines, Zombie Nation by Kernkraft 400.
My kid was at that game where he announced that and they had everyone in the stadium sing it when he came up the first time.
To clarify....this would be my pit/ride out music before a race. Thought this was being asked in regards to that....not baseball Would probably go a different route for that.
My answer is still Lose Yourself or Breadfan... same as it was last time we discussed this. I don't remember why the Yanni reference... probably something @Steeltoe said.