Roll out the barrel -- and the tubas, steins, lederhosen and dirndls – as Denver Oktoberfest ushers in another season of festive Bavarian tradition. Since 1969, the German celebration has been part of Denver's history, beginning on Larimer Square and then moving to Larimer Street between 20th and 22nd streets. The gemütlichkeit (that's good vibes to you) will start flowing at 11 a.m. Friday, September 22, with food, music, competitions, polka and, of course, plenty of German and American beer. The fun continues until 9 p.m., then repeats during the same hours on Saturday, September 23. Can't find the wiener dogs? Come back on September 29 and 30 for the Long Dog Derby, more pretzels and sausages, and live music from the Milk Blossoms and DJ Chonz. The party is free, but you'll need to purchase tickets to exchange for beer; food vendors will accept cash and credit cards. VIP tickets, which cover a T-shirt, mug, unlimited food and other goodies, can be purchased at thedenveroktoberfest.com. Prost!