Green Day – 21 Guns Guitar Cover Apr 17, 2016 1,039/Smoothed Out Slappy Hours, 21st century Breakdown, Cover 21 guns, Cover Green, Cover GREEN DAY, Cover Punk Rock, Cover Rock, Shameful editing. Shots fired. Like 0 Thanks! You've already liked this « Green Day-Boulevard of Broken Dreams-A.I.#4-Cover » No Reply At All – bass cover