The post tree (Nursery rhymes)

It’s music about a little girl trying to post a letter to a mailbox but not reaching it.

Lyric

Not delivered Not delivered
I just can’t reach it

I want to write a letter
Does not reach the post

Stretch out and stretch out
I can’t reach it a little more

Posts lined up
Which one should I put it out?

Top post?
You can’t get it

Hey, sister, do you have a piggyback?

It’s impossible