Never mind a list as long as my arm, the list of people who've covered Rebel Yell is as long as my leg and I'm reckoned to be quite tall for a lass, but this one still manages to have an original twist that made the hairs on the back of my neck stand up. Nice one!
Sounds great to me. Plus, giving a different tune to a song is what a COVER SONG is basically about anyways. Slower but, nice and heavy with great vocal work. Gotta say, if anyone thinks remixing a song into a different style, tone or speed is wrong... man it would suck to be a person like that, LOL.
They took an upbeat song and played it down, thus the typical reaction is "omg it sucks." Technically speaking, it's just fine. It just doesn't compare to the original, since you expect "Rebel Yell" to flow quickly.