When Ephram sits down at the piano outside after checking in for his audition, the music he is supposed to be playing doesn't match the motions he is making with his hands on the piano.
When Dr. Brown and Ephram walk through NYC after checking into the hotel, Ephram says to his dad, "your girlfriend's boyfriend just came out of a coma...". It was her husband, not boyfriend.
Dr Brown should have told Madison, 'Tell him everything... AFTER THE AUDITION.'
Irv tells Harold, 'In your own way, you've been a good son-in-law to me.' Harold is Irv's stepson, not his son-in-law.