 "Jo Jo" followed up on Annette's hit song, "Tall Paul" which itself marked the first time a female singer reached a top ten slot for a rock and roll single.The Sherman Brothers went on to write the majority of Annette's early 1960s songs as well as winning two Oscars for "Mary Poppins" several years later.The song references Fedor Jeftichew, a sideshow entertainer best known as "Jo-Jo, the Dog-Faced Man", who suffered from hypertrichosis.