A lot has already been written about Björk’s new Biophilia project, because it’s been about a fortnight since it was launched at the start of the Manchester International Festival. So I won’t go into masses of detail about what happened, everyone knows about the ginger wig, the choir and the Frankenstein’s laboratory feel of a stage full of crazy new kinds of musical instruments. In fact, I might even try not to mention the ginger wig again at all…