"LazyTown Megamix" is a remix song composed of clips of various LazyTown songs. It has not been featured in an episode, but was released as a b-side on the Bing Bang (Time to Dance) single. It was also released on The Greatest Hits as a bonus track.
https://lazytown.fandom.com/wiki/File:LazyTown_-_LazyTown_Megamix.mp3