Written by Harald Alfred Bergstedt
Music by Carl Nilsen
Lyrics by 1924

In a Sesamgade 2009 episode Sofie taught Elmo how to sing about things that he cleans up, using the music from the Danish song "Jeg ved en lærkerede" ("I know a lark's nest").

The song was originally written by Harald Alfred Bergstedt in 1921. In 1924 the Danish composer Carl Nilsen created new music for the lyrics and the song was puplished in it's current form in the book "Ti Danske Smaasange for Sang og Klaver".