1. Roll a Joint if it legally applies.
2. Play an electric bass to the menu music.
3. Play an electric guitar to the menu music.
4. Play a synthesizer to the menu music.
5. Play the drums to the menu music.
6. Smoke the joint you rolled in step one if you are still waiting, if not legal skip to 7.
7. Shop for mice on Amazon
8. Shop for graphics cards on Amazon.
9. Twiddle your thumbs.
10. STFU and deal with it and rage in the match!

Or just open .pak and .wad files and sample the audio files and write a track like so:
https://soundcloud.com/jasmiller87/war