Our daughter is just 2 years 3 months old and she is already singing made up melodies and lyrics. A couple of days back she made up a song about new bushes (whatever that is). Her friend (3,5 years) jammed with her dad on a keyboard and started singing very creepily “it sat for five minutes, sat for five minutes, sat for five minutes, and then it died”.
What I love most about what kids say in these young years is that it is so freaking random. As a teen I loved dadaism and absurd theater and all this random stuff coming out of toddlers is absolutely golden. It sounds like a Merz poem at times. I can absolutely imagine a four year old telling a story about a cleaning lady with 5 kids and a husband.