This Is America, Charlie Brown1988

Thomas Edison:
[gesturing to Marion and Peppermint Patty] Gentlemen, we have two special guests tonight.

[gesturing to Peppermint Patty again]

Thomas Edison:
This young lady seems to agree with me that the phonograph can work. In fact, it was Marion's doll that helped me along the way to this talking machine.

[pointing to the two diaphragms on the phonograph]

Thomas Edison:
Marion and Miss Patty, these are two diaphragms. They are the key to this talking machine. John Crusa here drew up the sketch for me. He doesn't think it'll work, but maybe we'll get lucky and at least hear one word.

John Crusa:
Yeah, but what will you say into it, Mr. Edison?

Thomas Edison:
Hm, let me think. Ah, yes, I have it. Are we ready?

[cranking the phonograph and speaking into one of the diaphragms]

Thomas Edison:
Mary had a little lamb. Its fleece was white as snow. And everywhere that Mary went, the lamb was sure to go.

[he releases the first diaphragm and turns the phonograph back the other way, cranking again with his playback; when it's over, the men cheer, and Marion and Peppermint Patty dance with joy]

Sally Brown:
Wow! He did it!