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 name of the festival changed 2005 after the ″Jazz Club Hannover e. V.″ initiated a partnership with ″Stadtwerke Hannover″ (local public energy company).
Many international and national stars of jazz scene were performing at the festival since the beginning in 1967.
A bigger prominence was created by introducing the ″Drum-Battles″ where international drummers takes place in a competition, for example Al Foster, Pete York and Charly Antolini.
The open-air concert was recorded until 2000 by German public radio and television broadcaster Norddeutscher Rundfunk.