In the long shot of Jolson performing on the runway, Al Jolson played himself, his only appearance in the film.
The film's accuracy was severely compromised by the fact that Al Jolson's third wife, Ruby Keeler, refused to allow her name to appear on screen.
While shooting the musical numbers, Larry Parks didn't merely mouth the words to Al Jolson's pre-recorded vocals, as was customary. Instead, he sang along to Jolson's records in full voice so it would look like he was really singing.
When Jolson attends the premiere of O Cantor de Jazz (1927) we hear the soundtrack, but Warner Bros., which owned the rights to O Cantor de Jazz (1927), would not permit a visual clip to be shown in this film, which was made by Columbia.