Ortlieb’s Jazzhaus was opened in September 1987 by jazz musician Pete Souders, who ran it until 2007. Under the new owner, they’re still holding their Tuesday night jam session
In a post for Hidden City Philadelphia, Bart Everts wrote:
The bar became a mainstay of the Philadelphia jazz scene, with musicians such as Bootsie Barns, Shirley Scott, Duane Eubanks, Farrid Barron, Cecil Payne and other notables taking residency. Tuesday nights featured an open jam where lesser known musicians might get to play with a legend. Throughout the 1990s, Ortlieb’s thrived as one of the few venues in the region offering jazz seven nights a week, a distinction that continued through the next decade.