album_presenter.description.discover album_name=Slippery Horn / Blue Harlem, artist_name=Duke Ellington, records_count=1, countries_count=1, countries=UK, media=Schellack, year_range=album_presenter.description.releases album_name=Slippery Horn / Blue Harlem, artist_name=Duke Ellington, records_count=1, countries_count=1, countries=UK, media=Schellack, year_range=album_presenter.description.countries album_name=Slippery Horn / Blue Harlem, artist_name=Duke Ellington, records_count=1, countries_count=1, countries=UK, media=Schellack, year_range=album_presenter.description.media album_name=Slippery Horn / Blue Harlem, artist_name=Duke Ellington, records_count=1, countries_count=1, countries=UK, media=Schellack, year_range=