October 6, 1927 –
Good, bad or indifferent to it, The Jazz Singer (the first feature-length movie with audible synchronized dialogue), premiered in NYC on this date.
Al Jolson’s famous line (as Jack Robin) “You ain’t heard nothin’ yet.” was an ad-lib. The intention was that the film should only have synchronized music, not speech, but Jolson dropped in the line (which he used in his stage act) after the song Dirty Hands, Dirty Face. The director wisely left it in.
