It isn't a million miles away from the way Roll and go do it, similar tempo except without instruments the verse tends to ebb and flow time wise and the chorus is with some gusto, harmony is different but pace and words more or less the same. We learnt it from a master obi wan Ipcar. Like you say most versions I have heard are dirgeish which I think does the poem a diservice. I think, like you, there is some anger in it.