Which is why this video is such a treat. It's when Edgar Bergen appeared on the The Muppet Show.
This isn't a good example of Bergen's craft. He and Charlie have little to do, and when Charlie does talk, you get the sense that Bergen almost was taken by the song around him and forgot that he was a ventriloquist. He never was known for great technique, just majestic characterization and humor, but this is among the worst you'll see. There is even a point where he's pretty much "open mouthed." But that's moot, because the clip is so special for so many reasons.
And at the top of that list is that it's the Muppets singing to Edgar Bergen and Charlie McCarthy to "Consider Yourself One of Us."
That's good enough for me.