Weird people being operated on, a song about “Perfection”

There has been this movie that has been bugging me for YEARS because all I remember is a small bit out of it, and I have never been able to figure out what it was.

There’s a guy, he’s getting wheeling into some sort of institute where they “perfect” people, or something like that. I swear they even started singing a song about “perfection”, or things along those lines. He tries to get out and he runs into two people who have been operated on, one has no face and only two large ears, and I think the other one only has a mouth?

It’s seriously been bugging me for years, I hope someone can help!

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