Big Bang Theory Secrets That Will Make You Say “Bazinga!”

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Soft Kitty Origin Story

Sheldon’s song, Soft Kitty, wasn’t just random cast improv like you might expect. The sitcom song is actually based on a children’s song from Australia. The song is known as “Warm Kitty”.

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Star Song

The introductory song playing in the theme was actually written for the show. It’s called “The History of Everything” and was written by the Barenaked Ladies.

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