Yes I think Jay could do a good, classy rumba, hopefully one which Len will like
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The dances Jay hasn't done are Charleston, Samba and Viennese Waltz I think, if they are allowed to drop one I wonder which one they'll drop. I think Jay could do a classy Charleston like Sophie Ellis-Bextor or Georgia, I can't imagine him doing one of the awful comedy skit ones with all the daft face pulling and mugging to camera (I still have nightmares about the Chris Hollins/Ola Charleston) and I think he could do a very good Viennese Waltz and Samba.
I was hoping he do a samba to "I want to be in America" from West Side Story.