Continuity mistake: During the dinner scene at Tom's, a couple of shots before Tom's phone rings and he goes to answer it, Nick's wine glass is about half full. After Daisy leaves to go to Tom and the shot cuts back to Nick, the level of wine in his glass has notably decreased, without him touching it. (00:09:50)
Continuity mistake: As Gatsby and Nick overtake a truck on a bend, he swerves in front of the truck to avoid an oncoming car. In the very next shot, he is not in front of the truck, nor is there an oncoming car. (00:36:30)
Continuity mistake: When George kills Gatsby, Gatsby falls into the pool with his arms by his side, but from a reverse angle, his arms are raised in the air. (02:02:35)
Continuity mistake: When Gatsby points out to Tom that his house is across the bay, there is then a shot of the house from Tom's view. The shot returns to Tom where we can see nothing around the top few inches his abdominal area. In a side angle of him, his cigar has suddenly appeared there. (01:28:35)
Continuity mistake: While Gatsby drives with Nick he takes his hat off and waves it, then it's back on, and then back to the previous angle of him waving it.
Continuity mistake: At Gatsby's second party, a band starts playing. The shot cuts to Gatsby, Nick, Daisy and Tom watching them. In this shot, Gatsby and Tom are a foot or two away from each other, but in a sudden close-up of the two, they are suddenly closer together. (01:12:30)
Continuity mistake: At the Plaza Hotel, Gatsby loses his temper and a strand of hair falls on his forehead. He takes both hands to button his jacket and when the angle changes his hair is brushed. His hands were too busy for him to do it between shots.
Continuity mistake: Meyer meets Nick and places his hand on his shoulder. A frame later Meyer is standing sideways, several meters away from Nick.
Continuity mistake: When Nick meets Gatsby at the party, the amount of confetti on his shoulder and hair changes between frames, sometimes appearing or disappearing on the same spot, depending on which angle is shown.
Continuity mistake: When the doctor tells Nick to write the story, the pen's position differs between the close-up and wide angles from being in a 5 o'clock or 12 o'clock position.
Continuity mistake: Just after Gatsby asks Nick his opinion of him, there is a cut to a low angle of him driving. In the shot from behind the car, the number plate is on the right hand side of the back of the car. This is only visible for a fraction of a second, so you have to be quick when you look at this. 2 shots later, the number plate has moved to the left side of the back of the car. (00:36:10)
Continuity mistake: During the meal where Gatsby is about to say that he and Daisy are in love (before the trip to NY), Daisy's fringe is messed up in the wide angles, but perfectly brushed in the close ups. This changes back and forth.
Continuity mistake: Right before Myrtle is run over, she runs down the stairs, hair messed up. She stops for a brief second where the angle changes to a close-up, when her hair style changes completely.
Continuity mistake: After Gatsby tells the story of how he met the sailor there's a blue shirt on the bed which disappears when he exits the library.
Continuity mistake: While Gatsby and Nick talk when the party is over, during the "repeat the past" scene, Nick walks down the steps and a piece of fabric behind him swaps from bright red to dark brown randomly.
Continuity mistake: In the scene where Meyer is having a conversation with Nick in the bar, the dancers on the stage begin to walk off and walk around the bar. One of them walks behind Meyer and places her hands on his shoulder, but in the next shot, the dancer's hands are no longer on his shoulder. (00:42:50)
Continuity mistake: When Tom and Nick get off the train and go to Wilson's shop, in a close up of Tom's face you see him look up toward the window (looking for Myrtle). After that it cuts to a wide shot and you can see Tom in the background repeating what he did in the close up.
Continuity mistake: During the first party scene, when Nick is ascending the stairs having a conversation with an unknown Gatsby, it cuts to a wide shot where Gatsby is standing at the top beginning to turn and give his "I'm Gatsby" line, it then cuts back to Nick and Gatsby continuing their ascent of the stairs. When they reach the top Gatsby is now in the position shown from the wide shot. (00:29:20 - 00:30:15)
Continuity mistake: When a band starts playing at Gatsby's party, Gatsby and Tom look and smile to each other. In the next shot, Tom is suddenly not smiling and looking straight forward at the band. (01:12:35)
Continuity mistake: After Gatsby shows Daisy his scrapbook of her, his phone rings. He walks over to it, picks it up and answers it. He has the phone in his right hand and the rest of the phone in his left. In the front shot, his left arm is bent whilst he holds it, but in the reverse angle, his arm is now rested. (01:05:30)
Chosen answer: The song is "Back to Black" by Beyoncé (Feat. Andre 3000).