Knowing the famous audition process of Woody Allen, in which an actor enters the room, is looked over by Allen and seconds later leaves the room, Colin Farrell entered his office, stood up, turned around and said, "That's it, right?" When Allen smiled and said yes, Farrell left the office.
Colin Farrell said in an interview that he "think[s] [he] did as many takes for this whole film as I did for one scene in Miami Vice (2006)."
When Woody Allen first approached Philip Glass about doing the film's score, they had an initial meeting in which Glass played him a particularly ominous piece of music. Allen remarked that it was a very heavy section of music and that it would be perfect for establishing the dark mood of the film. Glass interjected with the fact that the music he'd just played was actually the love theme and he hadn't gotten round to writing anything ominous yet!
Unusually for a Woody Allen film, the music is provided by a composer - in this case, Philip Glass - instead of being a collection of old standards.