Time for another quick look at Variety headlines. We get a pair: "Hollywood Learns to talk" and "Big Bonanza for Diction Coaches."
Then we're inside the office of diction coach Phoebe Dinsmore. She's working with Lina. God bless you, Ms. Dinsmore.
Things are not going well. Lina struggles with her one practice line, "And I can't stand him."
Dinsmore tries to get Lina to employ warm, round tones. Lina tries, but still sounds like an armadillo stubbing its toe.
Cut away to Don: He's also working with a diction coach, and he's killing it.
Cosmo shows up just as the nerdy coach is giving Don some tongue twisters. Cosmo pulls faces behind the stuffy coach's back as he speaks.
Then Cosmo and Don take the coach's last tongue twister—"Moses supposes his toeses are roses…"—and turn it into a rollicking, silly song and dance number called, what else, "Moses Supposes." We don't think they're taking Don's vocal education very seriously.
"Moses Supposes" is the second of the two, and only two, original songs in Singin' in the Rain.
The number culminates in Don and Cosmo covering the diction coach in assorted furniture, knickknacks, and garbage from his office.
Just to be clear: Shmoop does not advocate the practice of tossing garbage on your teacher, no matter how fun it looks.