Since it looks like you're leaning towards rap, my High School Basketball team listens to "Don't Push Me" by Eminem and 50. Seems to work well for them. I am also a HS pitcher, but to get pumped up, I just bump anything from Disturbed's "Ten Thousand Fists". That album is great for anyone who likes hard rock for motivation. Also, anything by ACDC usually gets the job done. Hope this helps, and good luck, let me know how you end up doing.