I noticed that too, Anax - first time I've ever seen it. Of course, it used to be said that Jimi Hendrix played his guitar 'upside down', but it was just a right-handed guitar strung in the normal way for a left-hander. As a former bass-player I cannot imagine how he plays it that way round. Great Xmas crossword, by the way - I'm now going to continue bespangling my Christmas tree....