In an episode of the Diary of a CEO, neuroscientist Dr. Sahar Yousef explains why cleanup songs work so well with little kids: the song has a clear beginning and a clear end, the kids know it will end, and so they become goal-oriented and speed up, especially towards the end. I made 48 [tidy-up timer songs](https://www.allmer.de/blog/misc/tidy-up-timer-songs/) for kids in English, German, and Dutch, so I wanted to know whether this holds up in the peer-reviewed literature.

1. Is there a study showing that cleanup songs make kids tidy faster?