I was just curious. In all the discussions I have had with Intrada, Varese, and the people on the FSM message board, no one has ever mentioned that Clayton sang "Coming Home" live on the set. You are actually the first person I know that has brought up that detail. That's why I asked the question.
I love Clayton's vocals on the Carousel and Show Boat Broadway cast albums. She even did a bit of singing on the Lassie TV series. Her rendition of "Coming Home" makes me cry whenever I watch that film.