 In 1775 he began running a restaurant in the Augarten, and in 1782 opened an adjacent concert hall, at which many famous musicians played over the years.Jahn's Hall was a part of Jahn's restaurant, in the main part of the city, which as of 1788 was at 6 Himmelpfortgasse.Concerts began there after the restaurant opened, and were given on a regular basis starting in 1790.