Other mistake: After the turkeys start attacking in "The Running of the Turkeys", Mr. Fishoder and his brother start running. In that clip a Turkey pops out the side of a guy's head. Look in the mid lower right side. Looks like a design error. Pretty big error, no slow down needed to see it. (00:05:20)
Other mistake: Tina ends up in second place after joining the KIS racer. In the next scene, the family is shown eating dinner. They are shown eating their meal from what is Tina's bedroom and not the kitchen (the room with the fire escape is the kitchen). (00:13:07)
Character mistake: The math test Tina gets a D on has #5 marked wrong. However it is correct. (Additionally it seems improbable she would actually get #3 and #4 wrong since she obviously understood the concept of how to do the problem and only had a problem with the division for some reason, and these questions didn't require division).
Continuity mistake: When Jimmy Jr. Comes up to Tina, Gene's lunch tray has no hot dog or milk, but when it cuts to the other angle, there's now a hot dog and milk.
Itty Bitty Ditty Committee - S5-E17
Continuity mistake: Gene's keyboard has a set of 3 black keys on both ends. But in the flashback when he's in bed with it, the end has a set of 2 black keys.
Continuity mistake: In a scene after Teddy shows up at Helen's house, but before Helen arrives, Louise uses a picture of Helen to show that Helen has the look of a killer. In the close-ups, when the family is covering various parts of the picture, Helen has a closed mouth smile, but in subsequent shots Helen has an open-mouthed smile.
Other mistake: When Bob and Louise are trying get the theater for the Hawk and Chick film festival, the employee tells them the last showing on Saturday at 11 pm. However, after the film is shown, Bob makes a remark about the time and asks if it is a school night. Gene says yes and he has a big test the next day. If the film festival happened on Saturday, then the next day would be Sunday. There would not be school.
Other mistake: When the Belcher family gathers water balloons at the beginning of fight, as Mr. Fischoeder says the line, "Every honky for himself..." a green water balloon magically rises into Gene's hand.
Answer: It's a made up song for the show. It's a synth version of what the kids sang in Mr. Frond's video at the beginning of the episode. "Let's Swap Eyes."
Bishop73