耶穌升天
The festival was founded 1967 by Michael Gehrke as the founder of ″Jazz Club Hannover″. The first place where the open-air festival was organized was the ″Opernplatz″. In 1971 the event location of the open-air part of the festival changed to the ″Trammplatz" in front of the New Town Hall in Hannover. The event takes place every morning at Ascension of Jesus. The second part of the festival, the ″Jazzbandball″, is located in the ″Hannover Congress Centrum″ every evening before Ascension of Jesus. There are about seven bands a year playing at the festival.