Related Clues:

• Emulated a stage manager
• Like forgetful actors
• In proper pitch
• Ready to strum
• Signaled offstage
• Given a signal on stage
• Prepared to play, as a violin
• Pulled on someone's harp strings
• Adjusted, as a viola
• Helped to begin
• Signaled to start
• (Of a piano) properly adjusted
• In good, playable condition, as a piano
• Fed a signal to
• Gave the signal to