If its long enough for 2 songs, I would use Metallica- Master of puppets, and rise against-Give it all. If i had to choose one id go with rise against-give it all
I tried this mod out and it totally screwed up my gun. I dont know how to fix it but i know it wasnt the mod, the foam stuff i used was really crappy i let it set for a week and then it just kinda flaked off. So im sure it worked for the people who didnt buy crappy foam.