This is a children's song, but also the song used to demonstrate the first voice synthesizer by Bell labs. It's a fun little song that I arranged myself for the music box.
It starts simple and gets more elaborate a bit into the song.
Hanah Lindayao
This is sung by a creepy computer and it became popular in horror videos.
Geert
What a nice melody this is! Well arranged as well, it really sounds fluently and harmonically!
Chen Yen-Ting
Children songs are always the best to demonstrate adding layer by layer onto the same melody