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Thanks, Matheous, for the extra effort in trying it on guitar. Yes, I can, and shall in the next few hours try to, add more notes. And yes, it is in the key of CMaj.
In the meantime, I have a correction to make:
There is NOT a guitar in the middle 16. Silly me, I was confusing my song with Telstar! The Bonanza Theme rhythm was a good clue, though.
Oh, well. Stay tuned for when I have about half an hour to come back to my computer. In the meantime, I need some shuteye.
Thanks again, Matheous.