This is a great, catchy classic with a awesome melody, so I was expecting it to be a blast on vocals. Sadly, it falls short for several reasons.
First off, when you think about it, there isn't alot of vocals in the song at all. But of course, the same applies for TTFAF and that was fun to sing, and we have some percussion to keep you bussy while waiting.
But sadly that doesn't stop HMX from charting it rather akward. Yup, another vocals chart that is halfway ruined by the chart, what a shock. During the phrases where he sings "black magic woman", the note to the word "woman" is charted way longer than what is audible, which makes it akward to sing like one would do naturally.
All in all, this is not that great for vocals at all. Just play it on keys and sing along to the song like you would do when listening to it on the radio. I would say that is a more enjoyable experience in this case.