Third production for my CATS 40th anniversary series:
There's no question about which clip to use for this production, because this was the first production in which Mungojerrie and Rumpelteazer danced to the upbeat Broadway melody that is now the norm.
In London, they danced their own song to the original jazz melody, the same that was used in the 2019 film.
In Broadway, they didn't really exist as characters, but were trash puppets animated (and narrated) by Mistoffelees to entertain Bustopher Jones, played by Etcetera and Coricopat. But the score was reworked to make them more fun and playful, less scheming and more mischievous, distinguishing them further from Macavity (the other jazz-themed character).
Vienna was the first production to have them as full characters dancing the Broadway setting: so here they are: Gregory Jones and Buenaventura Braunstein as Mungojerrie and Rumpelteazer, Vienna, original 1983 cast sometime between February and April of 1984.