the duo's eponymous song "mungojerrie and rumpleteazer" has been revised several times. in the original london production, the number was a singsong-style duet that was mainly composed in time with a slower tempo and more jazz-like sound. when "cats" opened on broadway, the song was rewritten to be faster and more upbeat, alternating between vaudeville-style verses (in time) and a "manic patter" section (in time). the london version was later rewritten to incorporate some aspects of its broadway counterpart. mungojerrie and rumpleteazer dance throughout their number and perform acrobatic feats, including their "trademark" two-person cartwheels.