The craziest thing I’ve had to do so far is many variations of a scream, because, although as the leader of the Shalka I am able to morph myself into human form, the way that we communicate is sonically, so I have screamed loud, soft, high, low, backwards, raucously, shrilly, in fact it’s amazing that I’ve got a voice at all, because I’ve done so many screams in the course of the last five hours.