The Bavarian Jazz Weekend in Regensburg can not be compared with the international Jazz Week in Burghausen, the Jazzfestival Zoppot (Poland) or the Mountreaux Jazz Festival. It all started with 18 Jazz formations performing free concerts for guests and locals of the city on two days in the summer and was initialy meant bring liveliness to the historic old city. However, it has turned into a small phenomenon today, and the reason for this are not that easy to explain. Why do highly celebrated musicians and famous Jazz formations still want to participate in this event and join into a city music jam each year allthough they do not receive more than an measly expense coverage of 80 Euros as remuneration? What sort of people would interrupt their tours only to get the chance to perform on a fully packed and steaming hot Regensburg Plaza in the middle of the summer?