Not many people will have heard Franks swing version Mark, and actually whilst I am sure a young woman such as Elizabeth would be flattered to be placed in the same sentence as Frank Sinatra, she is obviously covering Stevie Wonders version - it does not allow for the same flexibility in phrasing as a swing which has a completely different groove. Perhaps go and listen to Stevie's Version and have a rethink abut what they were probably trying to achieve - an early morning, feel good song that listeners will be humming for the rest of the day.
I must also point out that you are evidently buying and eating Chinese food badly - probably even with a knife and fork
