My grasp on singing, especially proper theatre singing is...sub colloquial at best, but...if she hadn't been too old by the time (46), I'd personally put my hat in for Dinah Shore, based off vocals alone.
Still, I really can't put any Actress in the role outside of Shirley. This is a childhood film, so...I just can never fathom anyone else...
This post may seem slightly OT, but it still respects the topic heading.
I've seen The Music Man (1962) at least a dozen times, and over the years I've bought both a VHS version of it, and now a DVD. It is still my favorite film, out of the thousands out there.
But do you know who is the most underrated performer in that movie? None other than Harry Hickox, who plays anvil salesman Charlie Cowell.
Watch the indispensable scene where Marian (Shirley Jones) spots Cowell, who's looking for Mayor Shinn to let him know that Harold Hill is no music professor, but a con man. By this time, Marian knows the truth, but she has also fallen in love with Hill. So she tries to distract Cowell, first by trying to convince him that Harold is indeed what he says he is, a fine music director; and, when that doesn't work, she tries using her sexual wiles to distract the anvil salesman. Next time you watch the film, take note of Ms. Jones' and Hickox's delivery of their lines. Their timing, and their body language together, are bloody perfect. I'm not kidding when I say that scene should be screened -- and studied -- for every actors' class.
Again, as an aside: when I was a kid, I thought he was Emory Parnell, the actor who played Billy Reed in the Ma and Pa Kettle film series. Even though I know it's two separate actors now, I still feel that urge to think of him as Billy Reed. Haha.
::Stupid search engine...who'd even want to watch therapist porn?::
Julie Andrews could've done any of these roles in these musicals. She was the best Maria and Eliza Doolittle ever. Lol, she starred with Robert Preston in Victor, Victoria.
Years ago I saw the wonderful Barbara Cook in concert with Mel Torme. Barbara sang a funny satirical song about how all the leading film roles for female singers went to Shirley Jones.
Not sure about the time frame but if this film was done in 1961 and released in the summer of '62, Judy Holliday may have been suffering from the effects of the breast cancer that eventually killed her, not sure those dates either. Also not sure when "Bells Are Ringing" was filmed and released, either.