I hate to have to denigrate any legend, but I must disagree with Wesley S's high opinion of Bigfoot. I mean, have you ever heard Bigfoot sing? Strictly amateur! And what did he accomplish, really? I mean let's face it: the guy's entire legend is essentially based on his being camera shy. He never even had any good adventures like, say, Peter Rabbit.

Back to reality, my vote for most underrated musical legend: Moondog