I love the song in the original but it's not the best piece to perform on piano solo, or sing to a piano accompaniment. The thing is that the solo piano part seems kinda sparse and lonely on its own, I mean you would recognize the composition of course but that's not the piece one should choose for performing at an audition, for example. If you want it to sound more kick-ass, you gotta add some percussion at least to make the pattern and the melody richer and more recognizable. Otherwise, the score is accurate and not bad at all. For your learning and private performance -it's a good catch.