The music to be played is the Scherzo of Bruckner’s Ninth Symphony, to begin at the play’s beginning and continue in pauses between acts; at the end, Scherzo of his Seventh, the ‘cock-crow’ movement. Each creature’s speech is always (save in one instance) to be preceded by his natural cry. And the tone of his voice as he speaks is to be somewhat inflected by that call: e.g. the Cock’s voice will be that of an elderly man, a little quavering but firm and active; the steer will have a deep bass voice; the kookaburra’s voice will be a clown’s, rapid-speaking, breaking occasionally; and so forth.
Throughout the play distant explosions should be heard, well-muffled but audible.