An early 1960s hand-lettered trade publication ad for an upcoming single 45 rpm release inspired the type design of Miss Rhythm JNL. The nickname of "Miss Rhythm" was given to Ruth Brown because of her popular "jump tunes"; that is rhythm and blues with an uptempo beat. Because the trade ad for her record was the inspiration for the font, it was only fitting to use that nickname as the font's name in honor of her.
Sobriquet means 'nickname'. The font is a narrow, handmade typeface, in an art-deco-ish style. It comes with a bunch of ligatures, distinct upper and lower case letters and extensive language support.