Hints and tips:
...But the Kathy character has to dance, and sing, as well as lip-sync. “Mr Kelly auditioned me and said ‘Do a time step,’” Reynolds recalls. “I could do that. Then he said ‘Do a Maxie Ford.’...
...“Why they put me in the film I’ll never know, other than that as a 17-year-old girl I was Kathy Selden, aspiring musical star. Without the dance training!” That changed quickly....
International Edition