In 1927, the first feature film with audible dialogue was released. The Jazz Singer made a huge impression at the time and prompted studios worldwide to experiment with the inclusion of sound in their films eventually leading to the decline of the silent film era. Ironically, the dialogue wasn’t intended at all. Originally, the film was only supposed to have synchronized music, but after the song “Dirty Hands, Dirty Face”, Al Johnson ad-libbed the line “Wait a minute, wait a minute. You ain’t heard nothin’ yet”. It was decided that the line should be in the movie (after Sam Warner’s insistence some sources claim), a few more lines were recorded and the rest is history.