Space Jam was weird because everybody has their own perception of what Bugs Bunny should sound like. Everybody. Somebody would just stick their head in the door and say, "He sounds too Jewish." Or, "He's too tough, he's off-putting. You gotta seduce kids, not scare them out the door."

Robin Williams understands sonic performances. He understands what it's like to change your voice up.

I had people that were coming on my own website and attacking me. You know, they were like Hillary Clinton supporters? It was very ugly.

Somebody's real voice is probably the hardest one that somebody could attempt.

But the throat just kind of falls into line once you realize in your head what it is. You got to remember the musicality of a character you're going to do.

When I was a little kid, I saw a guy with one of those cancer clarinets, and I flipped out. I totally flipped out. I said to my mom, "Mom, what is that thing?" And she happened to know, too, which was the oddest thing. She said, "That's a Bell Telephone artificial larynx, for men that had their voice boxes removed because of cancer." I was like, "Wow." And I couldn't wait to get one. I didn't get one 'til I was all grown up and everything.

In a black-and-white world, back in the '50s, were voices from another era. All actors used to sound different. Robert Mitchum sounded different from John Wayne, and John Wayne sounded different from Clark Gable. They were like men's voices, but they weren't Everyman, it was them.