Blur debuted two new tracks on their Twitter this afternoon, broadcasting performances of "Under the Westway" and "The Puritan" live from the roof of the office building Damon Albarn shares with FADER's London outpost. Afterward, they answered questions from fans (favorite pizza: plain cheese) and posted videos with lyrics for each track. Stream both below; they were written for Blur's headlining performance at the closing ceremony of the London Olympics. New Order, The Specials and Bombay Bicycle Club will open that show, taking place in Hyde Park on August 12th.