Re: Wyrd Sisters - The Play
having been there & done that (1995, i think?) i wish you the best of luck! i played the conjured demon and the rights-knowledgeable peasant (amongst other roles) at Sheffield's Merlin Theatre. we kept some scenes running as frozen tableaus behind some of the shorter scenes and my favourite memory was ad libbing the peasant "it was a good goat too, till he burned it. red sky at night, my goat's on fire...." and hearing the entire - unprepared - tableau behind me collapse corpsing.
Made some good money for the Orangutan Foundation too, if i recall.