TIME flies. But sometimes we waste it on unworthy (不值得的) things. In the end, you will find yourself trying so hard but nothing will come of it. US rock band Linkin Park sings about this in their song In the End. It came out on Nov 21, 2001. Starting with a catchy (容易记的) but simple piano line, the song sounds much like a pop song rather than a rock song. It then changes to a more rock-like feel with live drums and guitars. Linkin Park is good at switching (转换) between these two styles. And this song is a perfect example.