"Ein Prosit der Gemütlichkeit" is the most popular oktoberfest song of all times. The musicians in the tents play it very often (sometimes three or four times an hour), reminding people to drink beer and clink glasses with their neighbours.
"Ein Prosit, ein Prosit der Gemütlichkeit,
ein Prosit, ein Prosit der Gemütlichkeit!
Oans, zwoa, g'suffa!"