Chigusa is the the gold standard of jazz cafes in Japan. It was first opened in 1933 in the rough, portside streets of Noge in Yokohama by Mamoru Yoshida (1913-1994). The history of Chigusa is a long and fascinating one, you can read about in English in this Japan Times article, or in Japanese on the home page.
The current Chigusa is a small, square room with all seats facing the enormous speakers set in front of the back wall. There are hand drawn portraits and photos on the walls from Yoshida-san's personal collection, and a small gallery space exhibiting more from through the years. The music in Chigusa ranges from old-time swing to modern, experimental jazz, almost all on vinyl. They welcome requests as well so have a long look at the record 'menu' they offer and write down what you'd like to hear. The volume is crisp and loud; don't come to Chigusa to have a lengthy conversation, this is a place to listen to great music. We're lucky to still have it with us. Photos of Chigusa at Tokyo Jazz Joints.