I have a friend who knows a guy in a Chicago-based CCR tribute band called the Fortunate Sons. They are pretty good. If you want to hear what CCR sounded like back in the day, they are more accurate than John Fogerty's current live show. I've heard them play a lot, so I've come up with plenty of lewd CCR lyrics to share.
Doo, doo, doo, lookin' out my back door
Doo, doo, doo, goin' in her back door
No, you won't hear the Fortunate Sons sing these words!