Many great songs contain poor grammar, and I wouldn't want to change a word of them. Hound Dog, Don't Think Twice or Backwater Blues are fine the way they are, but some songs just sound like a mistake has been made by someone who should know better.
Hearing the Olympic Theme Song with,"I believe in the power of you and I" brought this to mind. I know the correct version, "I believe in the power of you and me," wouldn't rhyme, but we shouldn't use incorrect grammar just to make a rhyme.