(This post is here because Twitter limits me to 140 characters)
On Audrey Hepburn's singing of Moon River:
How is her singing lacking? Let me count the ways.
Her voice is breathy, and there is a lack of breath control
She cannot sustain notes and her vibrations are off
Her singing veers into speaking
And this was before the Rex Harrison days
Sometimes she even loses control of her pitch
Of course, this comes across as sexy to some, but even there it's not quite right, since breathy sexiness doesn't quite square with her petite frame and cutesy demeanor