I think you should calm down... Linkin Park is playing a very small little clip of Darker Than Blood, it's like 45 seconds long. And it's also a new single and they obviously like the song because Chester has told ALTWIRE that he likes the song more than A Light That Never Comes which is the other song they did with Steve Aoki. And like people have said, LP has played a lot of covers and even Its Goin Down and We Made It which were just features as well, but the band still played them. And Darker Than Blood isn't even a full song like those, it's just a small clip. I know a lot of bands who don't only play songs just from their albums, bands like to have fun and I think they should just play whatever they want to play and have a good time.