I know this is a little old and a bit cheesy, but I'm a huge film musical fan...huge...and I have to tell you regardless of how many musicals I've watched I still say that no-one has ever had a more beautiful voice than Jane Powell when she sang this from 7 brides for 7 brothers..
...it still chokes me up after all these years listening to her glorious voice
I never cared for Lee Marvin, mostly because of the smart a$$ characters he always played, and he can't sing very well. But a snippet of this song was on a TV commercial yesterday so I tracked it down and really like it, probably because of the video, and because it's almost believable. It's from Paint Your Wagon. I think seeing the rest of the movie would ruin it, so I'll pass. I'd rather speculate.