The Chainsmokers have a new EP out called Collage, and it's Monday.'s time to mix it up! For this week's Mix It Up Mondays song of the week, I present you a cover of All We Know sung by Vietnamese internet "hotgirl" Tường Vân. You might be thinking that this video is nothing special, and you are absolutely right. I just wanted to post a video of a cute Viet girl singing a new Chainsmokers' song. Is that a crime?