Four months before the movie was released, some people were invited to watch it in a cinema and to decide which title would fit to the story. The three possibilities were "Spiel mit mir", "Schnauze, Baby" and "Wenn Inge tanzt".
While Systemfehler is a school band in the movie, all actors playing the band members were actually much older than their characters are likely meant to be: Tim Oliver Schultz was exactly eleven days short of his 25th birthday when the film was released. Paula Kalenberg was 26, Constantin von Jascheroff and Thando Walbaum both were 27. Tino Mewes (although his character does not seem to go to school anymore) even had turned 30 a few months before.