Sorry I haven’t had chance to listen to this, and where I am now is not properly set up for audio.
But I wondered if this was the original song?
In the last year or so, i have become a belated PP fan, as we were regularly looking after our very young grandson, and this was one of the things I put on (on Youtube, on our smart TV). The youtube videos are very often compilations of multiple episodes, and he would only pay attention to about one episode usually, although I wanted to watch them all!
I noticed that with the later, more high-tech versions (where Pat has a helicopter and goodness knows what else), they were using a different song that went something like:
Doobeedo Postman Pat
Do you know what’s in his sack
Will there be a letter?
Will there be a parcel?
Will there be a postcard?
Doobedoobedoobedoo…Postman Pat…
And then when he was promoted to “Special Delivery Service”, that too had its own music!
(Got to keep up with the times…).
(Wish Royal Mail was as well equipped everywhere as Pencaster/Greendale is
(and was still in public ownership, but we’d better not go down that road…
Edit: These are the original lyrics I think:
https://songmeanings.com/songs/view/3530822107859446593/
Not found the updated ones yet.
Edit2: From this YT video, what I was thinking of may just be the ending theme:
Postman, Postman Pat!
Can you guess what’s in his bag?
Is there a letter? (Meow!)
Is there a parcel? (Meow!)
Is there a postcard? (Meow!)
What’s left? Jess the Cat!
Postman, Postman Pat!
Can you guess what’s in his bag? (Meow!)
Kudos to anyone who can come up with the Special Deliver Service lyrics!!
Edit3: Looks like it’s kudos to me after all (and my friend google!):