Related Clues:

• Square dance official
• Line feeder
• Stage assistant
• Stage coach
• Stage aide
• Signal caller
• Off-camera card-holder
• One calling the moves for a round dance
• One holding a card, perhaps
• Line provider
• One holding the cards, on a set
• Actor prompter
• TelePrompTer, e.g.
• Round dance official
• Square dance caller