I'm planning on performing a kempo kata in a couple of weeks and i wanted to put music in my performance. I need a song that starts off slow for a few seconds then builds up. My kata is maybe 2 minutes at best so i need a good short song.
Try looking into the koto drums. They're very traditional, and you might find what you're looking for.
This is always the best song for martial arts. The wong fei hung song.
Go with any song on Bruce Springsteen's "Born in the USA" album, or perhaps something from the greatest hits of Jon Secada.