Emporium of MirthMartin White
Ok, so technically he's a onovelty act, but in the case of Accordian player Martin White that's no bad thing. In fact, it's a bloody good thing.
With his magical musical machine, Martin woos the crows while making songs as disparate as Radiohead's Just and Sinead O'Connor's Nothing Compares 2 U sound like joyous ditties, all the while singing as if his life depended on it.
Such entertainment is unexpected from an instrument usually associated with gimmers in flat caps with accompanying spoon solos, but by god, it works.