IF you are a big fan of punk music, then put the song 21 Guns (《21响礼炮》) on your playlist. It is from popular American band Green Day, which was formed (成立) in 1989. And their music still touches people today. This song came out in 2009. It is an anti-war (反战) theme song that calls for peace. It tells people to never waste time on unworthy (不值得的) things. But fight for what you really want, or you will lose yourself. So when you find yourself stuck in life, try to keep calm at first. And then find a new way out.