Audio problem: In the close-up, as Jack is whistling "Toot-Toot-Tootsie," it doesn't match up with his mouth.
The Jazz Singer (1927)
1 audio problem
Directed by: Alan Crosland
Starring: Warner Oland, Al Jolson, Eugenie Besserer, May McAvoy
Continuity mistake: Jack is finished singing Toot-Toot Tootsie and the audience is applauding. The guy sitting to the viewers left, with no cut-aways suddenly has a cigar appear in his mouth, he removes it then its back in his mouth.
Jack Robin: We in the show business have our religion too - on every day, the show must go on.
Trivia: This was the first movie ever with audible dialogue, though less than 400 words are spoken in the whole movie.