Possible Clues:

• Article appears after group rehearsed play
• Prepare bishop, say, for a formal speech
• Meticulously planned movie scene
• Firm slice finds corner, say
• Impressive movie scene
• Stage scenery for group work
• Stage scenery item
• Formal speech placed before queen, perhaps
• Place rook, say, in corner, maybe
• Carefully structured and practised speech — see pi, etc (anag)