From the Disney Parks YouTube Channel:
Munich’s Oktoberfest, the 16-day traditional German festival, officially kicks off for 2012 on September 22, but in the Germany Pavilion at Epcot, guests celebrate with a crackerjack quartet every week of the year. The Oktoberfest Musikanten (German for “Oktoberfest Musicians”) plays polkas and waltzes inside the Epcot Germany Pavilion while lunch and dinner guests at the Biergarten Restaurant enjoy bratwurst, sauerkraut, pork schnitzel and spaetzle.
http://www.youtube.com/watch?v=7AqeRrHw5cE