As news broke of Joan Rivers’s death at 81 years old Thursday after complications from throat surgery, NewsFeed would like to take time to reflect on one of her most cheerful moments on television.

This video shows the time when Fred Rogers, most famous for hosting Mister Rogers’ Neighborhood, serenaded Rivers with “It’s Such a Good Feeling” on a 1986 episode of The Tonight Show. Fast forward to the 2:08 mark when she is leaning against the piano, snaps her fingers and starts singing along with “Mister Rogers” with her arms around one of his.

Watching this clip is truly “such a good feeling.”

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Write to Olivia B. Waxman at olivia.waxman@time.com.