A variant of Rotwelsch was spoken by some American criminal groups in the 1930s and '40s, and harpist Zeena Parkins' 1996 album Mouth=Maul=Betrayer made use of spoken Rotwelsch texts.
The variety of the – generally poor – people living in the part of the old town called Matte, known as Mattenenglisch (Matte-English), even though it has little relation with English, but has a number of loans from Jenisch, Rotwelsch and Yiddish.