Spider John Koerner
"This rendition of "Santy Anno" is pretty awful, bearing no connection to the origins of the shanty."
You might be right that it is awful and has no connection to the Shanty origins.
I, at least, found it original and interestingly so. Inspiring? No. Profound? No.
I'm not certain how a shanty is supposed to be performed. This probably isn't the way to do it. But I can see how a jazz arrangement could work or a blues version or a folk-rock version.
The Killigans sure have a lively version of it.
I'm not sure I would call any of the performances awful -- to me awful means out of tune, off key, no sense of musical feeling, just loud and noisy, repetitive without any variation, no feeling for a well-played phrase, no feeling for beginning, middle and end, no development, and playing musical phrases the same way each time they occur.
I don't think Spider John's performance is meant so much to be enjoyable (although I do enjoy it) so much as its meant to be interesting.
I appreciate your comments on the German version. I never thought of a connection between electric instruments and pounding. Maybe that's why I almost never listen to electric guitars.