WATCH: Billie Eilish speaks at DNC before performing "My Future," telling viewers to register and vote for Joe Biden."You don't need me to tell you things are a mess…We all have to vote like our lives and the world depend on it, because they do" https://t.co/awW9qLbEkI pic.twitter.com/OOQKykT92Y— CBS News (@CBSNews) August 20, 2020