No No No
I would highly suggest listening to the song again before remixing it.
I know some people like to change the melody up a bit, but this song is so inaccurate it's hard to listen to. The melodies don't harmonize at all. it doesn't make sense; there's flats in places where there shouldn't be--and that's not just in comparison to the original; musically it doesn't add up.
I cannot give this a single star; I'm sorry.