Originally Posted By: BranShea
It never corresponds with the music of the first line.
...
"I see the bad moon arising.

John Fogerty has an interesting style and the way he sings it, the first line sounds to me a lot like:
I see huh badduh oomah eye zing
or perhaps
I see her better rumor I sing

So in the first line, "bad moon" is "badduh oomah" but in the chorus, it's "baaaaa doom" so even if you get one, it's easy to miss the other.