Possible Clues:

• 1st Atlantic album by Rush in '89
• "Voilà!"
• (Of music) very fast
• Musical instruction to play quickly
• For the magician after the hay, by the sound of it
• Appearance announcement
• Quick change of poster
• With 57-Across, "Presenting: Wall hanging!"
• Annoyance: duck stopping runs being scored quickly
• Part of a magician's mumbo-jumbo